Engineering Physics Exam Materials - 2855 Verified Questions

Course Introduction

Engineering Physics

Exam Materials

Engineering Physics is an interdisciplinary course that bridges the fundamental concepts of physics with practical engineering applications. The curriculum covers topics such as mechanics, electromagnetism, thermodynamics, optics, and modern physics, emphasizing their roles in solving real-world engineering problems. Students gain a deeper understanding of how physical principles underpin the design, analysis, and innovation of technological systems, and develop analytical and problem-solving skills essential for advanced study or careers in engineering and related fields. Laboratory experiments and projects further reinforce theoretical knowledge through hands-on experiences.

Recommended Textbook

University Physics with Modern Physics 2nd Edition by Wolfgang Bauer

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2855 Verified Questions

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Page 2

Chapter 1: Overview

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Q1) What is the minimum number of post-it note sheets,length 3.00 inches and width 2.00 inches,you would need to make a straight line from the wall in your dorm room to the door which is 30.0 feet away from the wall?

A)50

B)80

C)120

D)180

E)200

Answer: C

Q2) Given that the formula for Newtonian gravitation is F = Gm₁m₂/r²,where F is the force,m₁ and m₂ are masses,and r is a unit of length,what are the units for the gravitational constant G?

A)kg³/(ms²)

B)(m/kg)(m/s)²

C)kg m/s²

D)kg²/m²

Answer: B

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Page 3

Chapter 2: Motion in a Straight Line

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Q1) A plane lands at 50.0 m/s,and its brakes are capable of slowing it down at 10.0 m/s².How far does it go (in m)between touching down and stopping?

A)9.81

B)50.

C)125.

D)500.

E)250.

Answer: C

Q2) A football player is standing on the 10 yard line.He runs forward to the 40 yard line and then runs backwards to the 30 yard line.What is the distance that he has traveled and what is his displacement?

A)distance = 20 yards,displacement = 20 yards forward

B)distance = 20 yards,displacement = 30 yards forward

C)distance = 30 yards,displacement = 30 yards forward

D)distance = 40 yards,displacement = 20 yards forward

E)distance = 40 yards,displacement = 40 yards forward

Answer: D

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Page 4

Chapter 3: Motion in Two and Three Dimensions

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Q1) A human cannonball is launched from a height of 2.0 m at an angle of 55 degrees with respect to horizontal and an initial speed of 18 m/s.How much time elapses before the human cannon ball lands in the net,which is also 2.0 m above the ground?

A)1.83 s

B)1.51 s

C)3.14 s

D)3.01 s

E)3.67 s

Answer: D

Q2) At what angle measured with the horizon must a projectile be launched such that its range is equal to its maximum height? Ignore air resistance.

A)45.0 degrees

B)60.0 degrees

C)63.2 degrees

D)76.0 degrees

Answer: D

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Chapter 4: Force

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Q1) A 75-kg man rides an elevator which is accelerating upward with a uniform acceleration of 1.4 m/s².What is the maximum force of static friction if the coefficient of friction between him and the floor is 0.42?

A)260 N

B)310 N

C)350 N

D)840 N

Q2) Two objects are not in contact,but they affect each other via gravity,and there are no other forces acting on either object.Which statement is always true?

A)The magnitude of the force of gravity is the same on both objects.

B)The direction of the force of gravity is the same on both objects.

C)The magnitude of the acceleration is the same for both objects.

D)The direction of the acceleration is the same for both objects.

Q3) A force of 100.0 N is applied to an object of mass 85.0 kg.What is the object's acceleration?

A)1.18 m/s²

B)2.49 m/s²

C)4.91 m/s²

D)9.81 m/s²

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Page 6

Chapter 5: Kinetic Energy, work, and Power

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Q1) A horizontal spring having constant k = 50.0 N/m is attached to a block having mass 0.50 kg.The mass is oscillating freely on a frictionless table with amplitude 15.0 cm.As the mass travels from equilibrium to half the position of maximum stretch,how much work is done by the spring on the mass?

A)+0.14 J

B)-0.14 J

C)+0.28 J

D)-0.28 J

Q2) What is the average power output of an engine when a car of mass m accelerates from rest to a final speed v over a distance d on flat,level ground? Ignore energy lost due to friction and air resistance.

A)mv²/d

B)mv²/2d

C)mv³/2d

D)mv³/4d

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Chapter 6: Potential Energy and Energy Conservation

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Q1) A child slides down a slippery slide (neglect friction)of length 3.0 m and angle of inclination 32S1U1P1\(\circ\)S1S1P0 above the horizontal.How fast is she going when she leaves the end of the slide?

A)3.9 m/s

B)5.0 m/s

C)5.6 m/s

D)7.1 m/s

Q2) How much mechanical energy is lost to friction if a 22-kg box slides 7.0 m down a rough inclined plane at a constant speed of 11 m/s? The inclined plane makes an angle of 33 degrees with respect to the horizontal.

A)820 J

B)920 J

C)1300 J

D)1500 J

E)1700 J

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Chapter 7: Momentum and Collisions

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Q1) Throwing caution to the wind,Bob hops off a bridge onto a small boat that is travelling under the bridge at 12.0 m/s.If Bob's mass is 85.0 kg,and the boat's (with its driver)is 451 kg,how fast is the boat moving after Bob lands on it? Assume Bob falls straight down into the boat.

A)9.7 m/s

B)10.1 m/s

C)11.0 m/s

D)14.3 m/s

Q2) A tennis ball (m = 57 g)hits a wall at an angle of 25 degrees with respect to the normal line (perpendicular to the wall).The initial speed is 12 m/s and it rebounds with the same speed.Find the magnitude of the impulse delivered by the wall.

A)0.58 kg m/s

B)1.2 kg m/s

C)1.4 kg m/s

D)More information is needed.

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Chapter 8: Systems of Particles and Extended Objects

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Q1) A carbon monoxide molecule consists of a carbon atom bonded to an oxygen atom.The mass of the carbon atom is 75% the mass of the oxygen atom.The carbon atom is located at the origin and the oxygen atom is located at x = d.Where is the center of mass of the carbon monoxide molecule located?

A)0.50d

B)0.57d

C)0.60d

D)0.75d

Q2) A 1900-kg cannon shoots a 5-kg cannon ball at a velocity of 25 m/s.What is the recoil velocity of the cannon?

A)0.033 m/s

B)0.066 m/s

C)0.132 m/s

D)0 m/s

E)1.23 m/s

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10

Chapter 9: Circular Motion

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Q1) A ball attached to the end of a string is swung around in a circular path of radius r.If the radius is doubled and the linear speed is held constant,the angular speed will A)remain the same.

B)increase by a factor of 2.

C)decrease by a factor of 2.

D)increase by a factor of 4.

E)decrease by a factor of 4.

Q2) The maximum speed a driver can travel on the banked curve on the Daytona Speedway is 45 m/s without using friction between his tires and the road to make the turn.The radius of the turn is 301m.What is the angle of the bank relative to the horizontal?

A)47^o

B)43^o

C)34^o

D)31^o

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Chapter 10: Rotation

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Q1) In opening a door,a person pushes at a point on the door 65 cm away from the hinges with a force of 50 N that is directed at an angle of 75S1U1P1\(\circ\)S1S1P0 with respect to the surface of the door.The torque on the door about its hinges is

A)32.5 Nm.

B)8.41 Nm.

C)40.2 Nm.

D)48.3 Nm.

E)31.4 Nm.

Q2) A disk rotates about an axis perpendicular to the plane of the disk D = 0.593 m from the center of the disk.The disk has a mass of M = 2.6 kg and a radius of R = 1.22 m.What is the moment of inertia of the disk about this axis?

A)0 kg m²

B)1.93 kg m²

C)2.85 kg m²

D)3.87 kg m²

E)5.11 kg m²

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Chapter 11: Static Equilibrium

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Q1) A system is in an unstable equilibrium if

A)after the system is disturbed slightly from its equilibrium position,it returns to its original position.

B)after the system is disturbed slightly from its equilibrium position,it moves farther away from its original position.

C)after the system is disturbed slightly,no torques or forces act in either toward or away from the original position.

D)the system does not move when slightly disturbed.

Q2) A uniform plank of length 5.00 m and weight 225 N rests horizontally on two supports.The left support is directly under the left end of the plank and 1.10 m of the plank extends past the right support.How far can a person who weighs 450 N walk on the plank to the right of the right support before the plank just begins to tip?

A)0.25 m

B)0.50 m

C)0.55 m

D)0.70 m

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Chapter 12: Gravitation

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Sample Questions

Q1) The radius of the orbit of a planet around a star is proportional to A)the orbital period of the planet.

B)the square root of the orbital period of the planet.

C)the square of the orbital period of the planet.

D)the 3/2 power of the orbital period of the planet.

E)the 2/3 power of the orbital period of the planet.

Q2) A space station is placed between a planet and its single moon at a position where the net force on the space station is zero.If the planet has a mass 1000 times larger than its moon,how far from the planet is the space station?

A)50.0% of the way to the moon

B)68.4% of the way to the moon

C)94.4% of the way to the moon

D)96.9% of the way to the moon

E)99.9% of the way to the moon

Q3) Two stars,S1 and S2,attract each other gravitationally with a force of magnitude

A)1/4CF.

B)1/2 F.

C)F.

D)2 F.

E)4 F.

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Chapter 13: Solids and Fluids

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Sample Questions

Q1) Salt water has greater density than fresh water.A boat floats in both fresh water and in salt water.The submerged volume of the boat in salt water is _____ that in fresh water.

A)equal to B)smaller than C)larger than D)None are correct.

Q2) A 500-g cubic block of a composite material floats with 40% of its volume submerged in your swimming pool.The force you have to apply to fully submerge it in the water is

A)7.4 N.

B)9.8 N.

C)13.2 N.

D)19.4 N.

E)27.5 N.

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15

Chapter 14: Oscillations

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Sample Questions

Q1) The position of a particle moving along x-axis is given by x = 0.05 sin (15(rad/s)t + 0.5 rad)m.Its acceleration at t = 0.5 sec is

A)-1.56 m/s².

B)-11.13 m/s².

C)-15.6 m/s².

D)-19.5 m/s².

E)-31.9 m/s².

Q2) A mass M = 2.54 kg is attached to a wall with a spring with spring constant k = 375 N/m.The mass slides on a frictionless floor.The spring and mass are immersed in a fluid with damping coefficient 8.25 kg/s.An external sinusoidal horizontal force F(t)= F_dcos(\(\omega\)_dt),where F_d = 75.4 N,is applied to the mass,causing the mass to oscillate back and forth.You may neglect the mass of the spring.The driving frequency \(\omega\)_d that will produce the largest amplitude response in the mass's oscillation is

A)12.2 rad/s.

B)1.625 rad/s.

C)148 rad/s.

D)24.6 rad/s.

E)64.3 rad/s.

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Page 16

Chapter 15: Waves

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Sample Questions

Q1) A string of mass 3 g and length 1 m can carry a wave of 20 mW power.The amplitude of the wave is 3.25 mm.What is the period of oscillation if the tension applied to the string is 42 N?

A)78 ms

B)40 ms

C)68 ms

D)73 ms

E)61 ms

Q2) A string is 80.0 cm long and has a mass per unit length of 5.51 * 10^-4 kg/m.The tension in the string is 200 N.In the fundamental mode,at what frequency does the string vibrate?

A)376 Hz

B)450 Hz

C)598 Hz

D)702 Hz

E)964 Hz

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Chapter 16: Sound

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Q1) The sound level when one student is talking during lecture is 40.0 dB.What would be the sound level if all 256 students talk at the same time during lecture? Assume each student talks equally loudly.

A)42.4 dB

B)64.1 dB

C)65.6 dB

D)296 dB

Q2) A bugle can be represented by a cylindrical pipe of length L = 1.24 m.Since the ends are open,the boundary conditions force the standing wave (representing the displacement of the air molecules)that is produced in the bugle to have antinodes at the open ends of the bugle,where the air molecules move back and forth the most.The longest wavelength standing wave inside the bugle is

A)0.620 m.

B)1.24 m.

C)2.48 m.

D)3.78 m.

E)4.96 m.

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Chapter 17: Temperature

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Q1) To what temperature should a 3-m cube of water at 20S1U1P1\(\circ\)S1S1P0C be raised to increase in volume by 1%?

A)68.3S1U1P1\(\circ\)S1S1P0C

B)38.1S1U1P1\(\circ\)S1S1P0C

C)29.2S1U1P1\(\circ\)S1S1P0C

D)54.6S1U1P1\(\circ\)S1S1P0C

E)43.8S1U1P1\(\circ\)S1S1P0C

Q2) A piece of brass 0.12 m² in cross sectional area is cooled by 30S1U1P1\(\circ\)S1S1P0C and is stretched by a force.If the fractional change in length is 1.12 * 10^-3,what is the magnitude of the force? (\(\alpha\)_Brass = 19 * 10^-6 C^-1,Y_Brass = 9.0 * 10¹⁰ N/m²)

A)18 * 10⁶ N

B)52 * 10⁵ N

C)74 * 10⁵ N

D)78 * 10⁶ N

E)95 * 10⁵ N

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Page 19

Chapter 18: Heat and the First Law of Thermodynamics

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Q1) How much heat is required to turn a 1 kg cube of ice at -10S1U1P1\(\circ\)S1S1P0C to steam at 110S1U1P1\(\circ\)S1S1P0C?

A)3013 kJ

B)3055 kJ

C)2260 kJ

D)2510 kJ

E)2817 kJ

Q2) Which of the following statements is false?

A)Positive work done on a system always increases its internal energy.

B)Positive work done by a system always decreases its internal energy.

C)If you use your hands to squeeze a gas filled piston,the energy of the gas in the piston will increase.

D)In an adiabatic process,positive work done on a system is always equal to its gain in internal energy.

E)All of the choices are true.

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Chapter 19: Ideal Gases

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Q1) A cylinder containing 5.00 mol of nitrogen gas is at room temperature (300 K).If the volume of the gas container is held constant and the gas is heated,such that 1.46 * 10⁴ J of energy is transferred by heat to the gas,what is the increase in the temperature of the nitrogen?

A)80 K

B)100 K

C)140 K

D)160 K

Q2) One hundred grams of liquid argon is sealed inside of a 2.0 liter container.After the liquid argon turns into a gas and the gas reaches a temperature of 0.0 degrees Celsius,what is the pressure inside the container due to the liquid argon?

A)0.07 atm

B)0.10 atm

C)4.5 atm

D)7.0 atm

E)28 atm

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Chapter 20: The Second Law of Thermodynamics

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Q1) Burning of fuel transfers 4 * 10⁵ W of power into the engine of a 2000-kg vehicle;supposing that the engine is 25% efficient,determine the maximum speed the vehicle can achieve 5 seconds after starting from rest.

A)32.6 m/s

B)10.5 m/s

C)22.4 m/s

D)5.8 m/s

E)16.4 m/s

Q2) A refrigerator has a coefficient of performance of 4.2.If the refrigerator absorbs 55 cal of heat from the cold reservoir (kept at 4S1U1P1\(\circ\)S1S1P0C)in each cycle,evaluate the heat expelled into the heat reservoir (kept at 21S1U1P1\(\circ\)S1S1P0C).

A)13 cal

B)16 cal

C)61 cal

D)68 cal

E)71 cal

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Page 22

Chapter 21: Electrostatics

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Q1) Three electrons are located at the vertices of an equilateral triangle,one at each vertex.The length of one side of the triangle is 1.00 nm.What is the magnitude of the initial acceleration of each electron?

A)2.52 * 10²⁰ m/s²

B)3.57 * 10²⁰ m/s²

C)4.38 * 10²⁰ m/s²

D)5.05 * 10²⁰ m/s²

Q2) Two charges are placed at the corners of an equilateral triangle that is 0.25 m on each side.The first charge is 4.5 \(\mu\)C and the second is 3.2 \(\mu\)C.If a charge if 2.5 \(\mu\)C is placed at the third corner of the triangle,what is the magnitude of the electric force on the third charge due to the first two charges?

A)0.602 N

B)1.96 N

C)2.41 N

D)3.19 N

E)4.31 N

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Chapter 22: Electric Fields and Gausss Law

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Q1) What is the electric field 0.25 m away from a -6.5 \(\mu\)C point charge?

A)6.1 N/C towards the point charge

B)6.1 N/C away from the point charge

C)9.4 * 10⁵ N/C towards the point charge

D)9.4 * 10⁵ N/C away from the point charge

E)1.5 N/C towards the point charge

Q2) Two electrons are located at two of the vertices of an equilateral triangle,one at each vertex.The length of one side of the triangle is 1.00 nm.What is the magnitude of the net electric field at the third vertex?

A)1.44 * 10⁹ N/C

B)2.03 * 10⁹ N/C

C)2.49 * 10⁹ N/C

D)2.88 * 10⁹ N/C

Q3) Which of the following surfaces have the largest total electric flux?

A)a sphere of radius 1 m with a 1-C charge placed inside at the center

B)a sphere of radius 1 m with a 1-C charge placed inside but off-center

C)a cylinder of radius 1 m and length 1 m with a 1-C charge placed inside

D)a 1-m cube with a 1-C charge placed in the center

E)a sphere of radius 1 m with a 2-C charge placed inside and a 1-C charge placed outside

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Chapter 23: Electric Potential

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Q1) A quarter of 24.26 mm diameter is given a charge of + 10 nC.The potential energy of an electron 1 cm above the quarter is

A)-1.12 * 10^-15 J.

B)-7.92 * 10^-16 J.

C)-7.41 * 10^-17 J.

D)-12.5 * 10^-18 J.

E)-43.1 * 10^-18 J.

Q2) In an effort to produce nuclear fusion you fire a deuterium nuclei (q = + 1e,m = 3.34 * 10^-27kg)directly at another (fixed)hydrogen nucleus.How fast must you fire the deuterium for it to approach within 2.0 * 10^-15 m of the nuclei?

A)8.3 * 10⁶ m/s

B)5.4 * 10⁷ m/s

C)1.4 * 10⁸ m/s

D)1.9 * 10¹⁴ m/s

E)2.1 * 101⁶ m/s

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Chapter 24: Capacitors

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Q1) The Earth has an electric field of 150 N/C near its surface.Find the electrical energy contained in a volume of air equal to the volume of a typical student (0.075 m³).

A)5.0 * 10^-11 J

B)7.5 * 10^-9 J

C)1.5 * 10^-8 J

D)1.0 * 10^-7 J

E)1700 J

Q2) A potential difference of V=24.0 V is applied across two capacitors in parallel,with capacitances 36.0 nF and 48.0 nF.What is the magnitude of the charge on one of the plates of the 36.0-nF capacitor?

A)1.2 * 10^-6 C

B)5.3 * 10^-7 C

C)3.4 * 10^-6 C

D)2.0 * 10^-6 C

E)8.6 * 10^-7 C

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Chapter 25: Current and Resistance

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Q1) A ribbon of nichrome (resistivity = 1.00 * 10^-6 \(\varOmega\)·m)with a rectangular cross sectional area of (0.25 mm * 1.00 mm)will be used as a heating element in a toaster.How long should this ribbon be,if the total resistance is intended to be 1.5 \(\varOmega\)?

A)1.24 cm

B)2.79 cm

C)12.4 cm

D)21.9 cm

E)37.5 cm

Q2) A particular wire has a diameter of 1.7 mm and length of 1.3 m.If its resistance is 15 m\(\varOmega\),what is the resistivity of the metal from which it is made?

A)1.0 * 10^-7\(\varOmega\)m

B)2.6 * 10^-8 \(\varOmega\)m

C)4.4 * 10^-6 \(\varOmega\)m

D)1.8 * 10^-5 \(\varOmega\)m

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Chapter 26: Direct Current Circuits

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Q1) The ammeter your physics instructor uses for in-class demonstrations has a resistance R_g = 60 \(\varOmega\) and requires a current of 1.0 mA for full-scale deflection.The same ammeter can be used to measure currents of much greater values by wiring a shunt resistor of relatively small resistance,R_p ,in parallel with the ammeter.The value of the shunt resistance that allows the ammeter to be used to measure a current of 12 A at full-scale deflection is

A)5.0 m\(\varOmega\).

B)4.0 m\(\varOmega\).

C)3.5 m\(\varOmega\).

D)2.5 m\(\varOmega\).

E)1.7 m\(\varOmega\).

Q2) A voltmeter must be placed in parallel with the circuit element whose voltage is to be measured.An ideal voltmeter therefore has A)zero resistance.

B)infinite resistance.

C)resistance equal to the circuit element.

D)None are correct.

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Page 28

Chapter 27: Magnetism

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Q1) What is the magnitude of the force on an electron moving with a velocity v = 5.43 * 10⁶ m/s at an angle \(\theta\) = 53.4S1U1P1\(\circ\)S1S1P0 with respect to a magnetic field B = 7.72 * 10^-2 T?

A)2.22 * 10^-12 N

B)3.35 * 10^-14 N

C)5.38 * 10^-14 N

D)1.20 * 10^-13 N

E)4.30 * 10^-15 N

Q2) Ions with a charge of 1 e travel at a speed v = 4.7 * 10⁶ m/s at right angles to a field of 3.6 T.If the ions travel in a circle of radius R = 0.47 m,what is their mass?

A)0.576 * 10^-25 kg

B)0.831 * 10^-25 kg

C)0.232 * 10^-24 kg

D)0.511 * 10^-24 kg

E)0.278 * 10^-25 kg

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Chapter 28: Magnetic Fields of Moving Charges

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Q1) A current of 2.45 A flows along the length of a long solid cylindrical conductor.The radius of the cylinder is 8.5 cm.The current is uniformly distributed through the conductor.Calculate the magnitude of the magnetic field 2.4 cm from the center of the cylinder.

A)5.65 * 10^-8 T

B)1.76 * 10^-6 T

C)2.95 * 10^-5 T

D)1.63 * 10^-6 T

E)6.64 * 10^-7 T

Q2) A long solenoid (diameter = 5.00 cm)is wound with 2000 turns per meter of thin wire through which a constant current is maintained.A wire carrying 8.50 A is inserted along the axis of the solenoid.The magnitude of the magnetic field at a point 5.00 mm from the axis is 0.650 mT.What is the current through the solenoid?

A)0.292 A

B)517 A

C)0.220 A

D)7.80 mA

E)22.7 A

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Chapter 29: Electromagnetic Induction

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Q1) An emf of 10 V is applied to a coil with an inductance of 40 mH and a resistance of 0.50 \(\varOmega\) .Determine the energy stored in the magnetic field when the current reaches one half of its maximum value.

A)0.020 J

B)0.20 J

C)2.0 J

D)20 J

E)200 J

Q2) A washer with inner diameter 5.0 cm is carried in your pocket as you walk directly north according to your magnetic compass.Assume the normal to the washer's plane is exactly horizontal,pointing toward magnetic north.The Earth's magnetic field strength is 0.056 mT.If the magnetic flux through the washer's opening is 36 nTm²,what is the angle below local horizontal that the magnetic field vector points?

A)71S1U1P1\(\circ\)S1S1P0

B)19S1U1P1\(\circ\)S1S1P0

C)85S1U1P1\(\circ\)S1S1P0

D)4.7S1U1P1\(\circ\)S1S1P0

E)None are correct.

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Chapter 30: Alternating Current Circuits

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Q1) Consider a series RLC circuit consisting of a 3.40-\(\varOmega\) resistor,a 8.60-mH inductor,and a tunable capacitor.The circuit is driven by an rms emf of 110 V running at 60 Hz.What value of the capacitor will allow the strongest current amplitude oscillations to occur in the circuit?

A)4.3 * 10^-5 F

B)3.2 * 10^-3 F

C)8.2 * 10^-4 F

D)0.032 F

E)0.31 F

Q2) Consider a series RLC circuit consisting of a 6.75-\(\varOmega\) resistor,a 8.60-mH inductor,and a 2.68-mF capacitor.The circuit is driven by a rms emf of 110 V running at 60 Hz.What is the rms current in this circuit?

A)11.0 A

B)15.5 A

C)16.3 A

D)19.4 A

E)21.3 A

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Chapter 31: Electromagnetic Waves

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Q1) A laser beam is reflected back from a totally reflecting sail on a spacecraft that is 4.5 * 10⁷ m from the source of the beam.How long after the beam is sent does it return to the source?

A)100 ms

B)200 ms

C)150 ms

D)300 ms

Q2) The amplitude of the electric field detected by an FM radio receiver is 400 µV/m.The intensity of the signal is

A)1.2 * 10^-10 W/m².

B)2.1 * 10^-10 W/m².

C)2.4 * 10^-10 W/m².

D)9.8 * 10^-10 W/m².

Q3) The amplitude of the electric field of an electromagnetic wave is 21 V/m.The amplitude of the magnetic field of the wave is

A)63 * 10^-8 T.

B)49 * 10^-8 T.

C)31* 10^-8 T.

D)7 * 10^-8 T.

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Page 33

Chapter 32: Geometric Optics

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Q1) For a concave mirror,when is the object distance equal to the image distance?

A)when the magnification is equal to zero

B)when the radius of curvature is equal to the image distance

C)when the radius of curvature is equal to half the object distance

D)when the focal length is zero

Q2) A single concave spherical mirror is used to create an image of a 6.00-cm tall source.The source is located 23.0 cm to the left of the mirror's center of curvature.The magnitude of the radius of curvature for the mirror is 12.0 cm.What is the height of the image?

A)0.11 cm

B)1.0 cm

C)0.88 cm

D)2.0 cm

E)1.24 cm

Q3) Light is incident on a heavy glass slab of refractive index 1.6.The speed of light in the glass is

A)3.0 * 10⁸ m/s.

B)2.5 * 10⁸ m/s.

C)1.88 * 10⁸ m/s.

D)1.5 * 10^-8 m/s.

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Chapter 33: Lenses and Optical Instruments

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Q1) A double lens system is made of +35.0 cm lens (lens #1)and a -26.0 cm lens (lens #2).Lens #1 is placed at x = 0 cm on a meter stick and lens #2 is placed at x = 30.0 cm.Where on the meter stick will the final image be formed when looking at a distant object?

A)6.2 cm

B)15.1 cm

C)35.0 cm

D)36.2 cm

E)39.7 cm

Q2) A Keplerian refracting telescope is used to look at craters on the moon.The objective focal length of the telescope is 92 cm and the distance between the objective and eyepiece lenses is 97 cm.The diameter of the objective is 25 cm.What is the focal length of the eyepiece?

A)5.0 cm

B)2.5 cm

C)15 cm

D)10 cm

E)20 cm

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35

Chapter 34: Wave Optics

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Q1) A red laser pointer with a wavelength of 635 nm is shined on a double-slit producing an interference pattern on a screen that is 1.6 m behind the double-slit.The central maximum of the interference pattern has a width of 4.2 cm,and it is noted that the third bright spot is missing on both sides.What is the size of the individual slits that were used to make the double-slit?

A)4.0 * 10^-6 m

B)8.1 * 10^-6 m

C)16 * 10^-6 m

D)24 * 10^-6 m

E)48 * 10^-6 m

Q2) Light from a helium-neon laser falls on two narrow slits with separation 0.200 mm.On a screen 1.00 m away from the double-slits an interference pattern emerges.If the fifth maximum is detected at 1.58 cm distance from the center,what is the wavelength of the light?

A)468 nm

B)511 nm

C)632 nm

D)722 nm

E)891 nm

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Page 36

Chapter 35: Relativity

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Q1) The rest energy of an electron is 0.511 MeV,and its rest mass is 0.511 MeV/c². If an electron has a speed of 99% that of light,what fraction of its total energy is in the form of kinetic energy?

A)76%

B)50%

C)68%

D)86%

Q2) If an electron (rest mass = 0.511 MeV/c²)has a speed of 99% of that of light,what is its total energy?

A)0.511 MeV

B)0.750 MeV

C)3.62 MeV

D)7.33 MeV

E)19.2 MeV

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Chapter 36: Quantum Physics

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Q1) The probability that an electron will occupy a state with E = 8.10 eV at 600 K is 0.125.What is the chemical potential of the metal?

A)8.00 eV

B)8.08 eV

C)7.96 eV

D)8.04 eV

Q2) A 20.0-kg particle has a deBroglie wavelength of 10.0 cm.How fast is the particle moving?

A)1.30 * 10^-34 m/s

B)2.64 * 10^-34 m/s

C)3.31 * 10^-34 m/s

D)3.98 * 10^-34 m/s

E)4.40 * 10^-34 m/s

Q3) Which one of the following statements is true if the intensity of a light beam is increased while its frequency is kept the same?

A)The photons gain higher speeds.

B)The energy of the photons is increased.

C)The number of photons per unit time is increased.

D)The wavelength of the light is increased.

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Page 38

Chapter 37: Quantum Mechanics

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Q1) A neutron moves between rigid walls 9.82 fm apart.The energy of its fundamental state is

A)2.12 MeV.

B)3.41 MeV.

C)2.90 MeV.

D)3.07 MeV.

E)5.28 MeV.

Q2) An electron is trapped in an infinite potential well.How does the amplitude of its probability wave function change as the width of the well increases?

A)It increases also.

B)It decreases.

C)It remains constant.

D)How it changes can't be determined solely by the information given.

Q3) What frequency of light does an electron confined in a rigid box of 1-nm length absorb? Assume the electron starts in the ground state.

A)3.4 * 10¹⁴ Hz

B)2.5 * 10¹⁴ Hz

C)6.0 * 10¹⁴ Hz

D)2.8 * 10¹⁴ Hz

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Page 39

Chapter 38: Atomic Physics

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Q1) A photon of wavelength 1.17 \(\mu\)m is emitted by a He⁺ when the electron jumps from the n = 7 state.What is the final state of the electron?

A)1

B)2

C)3

D)4

E)5

Q2) A photon of wavelength 155 nm is absorbed by the electron in a hydrogen atom that was in the n = 2 state.What is the energy of the electron as it leaves the atom?

A)4.6 eV

B)1.2 eV

C)5.6 eV

D)2.2 eV

Q3) What is the longest wavelength in the Lyman series of hydrogen?

A)122 nm

B)312 nm

C)415 nm

D)535 nm

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Chapter 39: Elementary Particle Physics

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Q1) Suppose a neutral rho meson (rest mass 770 MeV/c²)decays at rest into two oppositely charged pions (rest mass 139.5 MeV/c²).What is the momentum of each pion?

A)305 MeV/c

B)196 MeV/c

C)359 MeV/c

D)402 MeV/c

Q2) If the energy of the virtual photon mediating an electron-proton scattering,e^- + p \(\rarr\)e^- + p,is 1.1 * 10^-20

J,what is the range of this electromagnetic interaction?

A)0.01 µm

B)3 µm

C)2 mm

D)1 cm

Q3) Of the fundamental bosons,which has the smallest mass?

A)W boson

B)Z boson

C)Higgs Boson

D)gluon

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Page 41

Chapter 40: Nuclear Physics

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Q1) If 10³⁰ atoms of a radioactive sample remain after 10 half-lives,how many atoms remain after 20 half-lives?

A)10²⁹

B)10²⁷

C)10²⁶

D)10²⁸

Q2) If the Fermi energy of a neutron inside a nucleus is 38 MeV,what is the Fermi momentum?

A)38 MeV/c

B)270 MeV/c

C)370 MeV/c

D)154 MeV/c

Q3) Sirius,the brightest star in the night sky coverts 3.216 * 10¹⁸ kg of its mass to energy every year.What is the luminosity (power radiated)of Sirius?

A)3.91 * 10²⁶ W

B)1.09 * 10²⁷ W

C)1.33 * 10²⁸ W

D)5.23 * 10²⁷ W

E)9.18 * 10²⁷ W

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Page 42