Introductory Physics Solved Exam Questions - 2855 Verified Questions

Introductory Physics

Solved Exam Questions

Course Introduction

Introductory Physics provides a foundational understanding of the key principles governing the physical world, including classical mechanics, energy, waves, electricity, and magnetism. This course emphasizes the development of analytical and problem-solving skills through theoretical concepts and practical applications. Students will explore topics such as motion, force, momentum, work, simple circuits, and the behavior of light and sound, equipping them with the scientific knowledge necessary for further study in physics and related disciplines. Experiments and demonstrations complement lectures to reinforce core concepts and promote scientific inquiry.

Recommended Textbook

University Physics with Modern Physics 2nd Edition by Wolfgang Bauer

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40 Chapters

2855 Verified Questions

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Page 2

Chapter 1: Overview

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Sample Questions

Q1) The distance to the Sun is one hundred fifty billion meters,which in scientific notation can be written as

A)150 * 10⁹ m.

B)1.50 * 10⁶ m.

C)1.50 * 10¹¹ m.

D)15 * 10¹⁰ m.

E)1.5 * 10¹⁰ m.

Answer: C

Q2) The surface area of a window pane of length 20.5 cm and width 11.9 cm is (given in scientific notation and with the correct number of significant figures):

A)2.4395 * 10² cm²

B)2.440 * 10² cm²

C)2.44 * 10² cm²

D)2.4 * 10² cm²

E)2.0 * 10² cm²

Answer: C

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Chapter 2: Motion in a Straight Line

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Q1) A police officer spots a speeding car traveling at 20 m/s (approximately 44 mph)as it passes.The officer immediately starts to drive,accelerating from rest at a rate of 5 m/s².How far will the officer have to drive before catching up to the speeding car?

A)100 m

B)80 m

C)500 m

D)16 m

E)160 m

Answer: E

Q2) The position of a nanoparticle as a function of time is x(t)= t² - t -

6,where x is measured in meters,t is measured in seconds and t > 0.When is the speed of the nanoparticle zero?

A)when t = 0.5 s

B)when t = 2 s

C)when t = 3 s

D)The speed of the nanoparticle is never zero.

Answer: A

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Page 4

Chapter 3: Motion in Two and Three Dimensions

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Sample Questions

Q1) Bill is riding a flatbed railroad car travelling down the tracks at 16 m/s.The instant he passes Ted on the side of the train tracks,he throws a water balloon at him.At what angle relative to the train's direction of motion must Bill throw the balloon in order to hit Ted squarely in the face,assuming he can throw an object with a speed of 24 m/s?

A)42S1U1P1\(\circ\)S1S1P0

B)48S1U1P1\(\circ\)S1S1P0

C)90S1U1P1\(\circ\)S1S1P0

D)132S1U1P1\(\circ\)S1S1P0

E)138S1U1P1\(\circ\)S1S1P0

Answer: D

Q2) If the launch speed of a kicked football was doubled,then by what factor would its hang time increase?

A)the square root of two

B)two

C)four

D)eight

Answer: B

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Page 5

Chapter 4: Force

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Sample Questions

Q1) 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

Q2) A 10-kg and a 4-kg mass are acted on by the same size net force (which remains constant)for the same period of time.Which one of the following statements is true?

A)The acceleration of the10-kg mass is 2.5 times greater than the acceleration of the 4-kg mass.

B)The acceleration of the 4-kg mass is 2.5 times greater than the acceleration of the 10-kg mass.

C)Both masses accelerate at the same rate.

D)The answer will depend on the length of the time interval.

E)None are correct.

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Chapter 5: Kinetic Energy, work, and Power

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Sample Questions

Q1) A 30.0 kg ball is released from rest and is acted upon by a net force of -1.40 F1F1F1S1 F1F1F10 10¹⁶ r ^-2 (the force pulls the ball towards r = 0).The ball starts from rest at an initial position of r_i = 6.39 F1F1F1S1 F1F1F10 10⁶ m and moves under the influence of the force to a final position of r_f= 6.38 F1F1F1S1 F1F1F10 10⁶.What is the speed of the ball when it reaches its final position,r_f?

A)552 m/s

B)531 m/s

C)478 m/s

D)442 m/s

E)404 m/s

Q2) An ideal spring requires 50 J to be compressed by 15 cm.The value of the spring constant of this spring is

A)2222 N/m.

B)667 N/m.

C)4444 N/m.

D)5648 N/m.

E)1245 N/m.

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Page 7

Chapter 6: Potential Energy and Energy Conservation

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Sample Questions

Q1) A 30.0-kg crate is pushed across a rough floor by a horizontal force of 100 N.The coefficient of kinetic friction between the crate and the floor is 0.100.If a total of 80.5 J of work is done on the crate,how far was it moved along the floor?

A)0.840 m

B)1.14 m

C)1.64 m

D)2.04 m

E)2.44 m

Q2) A block (m=12 kg)is moving at a speed of 7.0 m/s on a level surface.A force of 25 N is applied in the direction that it is moving but it comes to a stop in a distance 625 cm.Find the coefficient of friction.

A)0.22 N

B)0.22

C)0.40

D)0.61

E)0.86

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8

Chapter 7: Momentum and Collisions

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Sample Questions

Q1) A 0.280-kg ball makes an elastic head-on collision with a second ball initially at rest.The second ball moves off with one fourth the original speed of the first ball.The mass of the second ball is

A)1.12 kg.

B)0.280 kg.

C)2.24 kg.

D)1.96 kg.

E)0.560 kg.

Q2) An object (m = 0.05 kg)with velocity 20 m/s collides head on with another with mass 0.10 kg at rest.If the first object has a velocity = 0 after the collision,what is the loss in kinetic energy (J)in the collision?

A)10

B)2

C)3

D)4

E)5

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Chapter 8: Systems of Particles and Extended Objects

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Sample Questions

Q1) In the water molecule,the hydrogen and oxygen atoms are separated by 10^-10 m and the bond angle between the two hydrogen-oxygen bonds is 105S1U1P1\(\circ\)S1S1P0.the mass of the hydrogen atom is 1 u and that of the oxygen atom is 16 u.The center of mass of the water molecule along the line of symmetry from the oxygen atom is

A)6.76 * 10^-12 m

B)8.91 * 10^-12 m

C)10.1 * 10^-12 m

D)14.6 * 10^-12 m

E)17.8 * 10^-12 m

Q2) The center of mass of an irregular rigid object is always located

A)at the center of the object.

B)somewhere within the object.

C)outside of the object

D)Both A and B are correct.

E)None are correct.

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Chapter 9: Circular Motion

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Sample Questions

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 kept constant,

A)the centripetal acceleration remains the same.

B)the centripetal acceleration increases by a factor of 2.

C)the centripetal acceleration decreases by a factor of 2.

D)the centripetal acceleration increases by a factor of 4.

E)the centripetal acceleration decreases by a factor of 4.

Q2) Two hikers begin at the same initial location and walk around a circular lake in opposite directions.One walks twice as fast as the other.The circumference of the lake is L.How far does the faster hiker walk before the two hikers meet at the same final location?

A)L/3

B)L/2

C)2L/3

D)3L/4

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Chapter 10: Rotation

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Sample Questions

Q1) A flywheel has mass 150 kg and radius 1.2 m,and is accelerated uniformly from rest to an angular speed of 125 radians per second in 12 seconds.What torque is required in order to accomplish this?

A)1.1 * 10³ Nm

B)2.2 * 10³ Nm

C)1.9 * 10² Nm

D)3.8 * 10² Nm

Q2) A uniform solid sphere of mass M and radius R is rolling without slipping along a level plane when it encounters a ramp that is at an angle of \(\theta\) = 32.0^o above horizontal.The maximum distance that the sphere rolls without slipping up the ramp before (instantaneously)stopping and rolling back down is 3.15 m.What was the linear speed of the sphere before it encountered the ramp?

A)3.69 m/s

B)4.84 m/s

C)6.12 m/s

D)7.86 m/s

E)None are correct.

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Page 12

Chapter 11: Static Equilibrium

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Sample Questions

Q1) A 5000-kg 200-m bridge is supported at both ends by pylons.A 1900-kg truck is 50 m from one end of the bridge.What force does the pylon nearest the truck exert on the bridge?

A)45,671 N

B)38,465 N

C)22,345 N

D)55,382 N

E)31,340 N

Q2) Three children acrobats are standing still on a circular horizontal platform of radius 4 m suspended at the center.The origin of the xy - Cartesian coordinate system is in the center of the circular platform.A 30-kg child is located at (1 m,2 m),and a 40-kg child is located at (-1 m,- 2 m).Assuming the children stand still on their positions,where must a 20-kg child acrobat be located so that the center of mass of the system consisting of the three children is at the origin and the platform is balanced?

A)(-0.5 m,2 m)

B)(-0.5 m,-2 m)

C)(-0.5 m,1 m)

D)(-0.5 m,-1 m)

E)Equilibrium impossible in this configuration.

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Page 13

Chapter 12: Gravitation

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Sample Questions

Q1) A mass of 10 kg is taken up to a distance nine times the Earth's radius above the surface of the Earth.What is its weight in N at that point?

A)10

B)980

C)98

D)9.8

E)0.98

Q2) A plumb bob located at latitude 63.0S1U1P1\(\circ\)S1S1P0 north hangs motionlessly with respect to the ground beneath it.Determine the angle that the string supporting the bob makes with respect to a straight line going through the bob and the center of the Earth.

A)0S1U1P1\(\circ\)S1S1P0

B)0.10S1U1P1\(\circ\)S1S1P0

C)0.20S1U1P1\(\circ\)S1S1P0

D)0.30S1U1P1\(\circ\)S1S1P0

E)Sufficient information is not given.

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Page 14

Chapter 13: Solids and Fluids

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Sample Questions

Q1) A single 8 * 11.5 inch sheet of paper is placed horizontally on a table.What is the approximate mass of all the air directly above the paper?

A)9.81 kg

B)1.01 * 10⁵ kg

C)1350 kg

D)611 kg

E)14.7 kg

Q2) Two wires of the same material are stretched by equal forces,but L₁ = 2L₂ and d₁ = 2d₂,where L and d are the lengths and diameters of the two wires.The ratio of the Young's modulii Y₁/Y₂ is

A)1.

B)2.

C)4.

D)½.

E)¼.

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15

Chapter 14: Oscillations

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Sample Questions

Q1) A simple pendulum has a period of 3.65 s on the surface of the Earth.If this pendulum were placed on the surface of the Moon,where the gravitational acceleration is 1.62 m/s²,what would its period be?

A)1.48 s

B)8.98 s

C)16.4 s

D)22.1 s

E)33.3 s

Q2) A 3.0-kg mass is attached to a spring with a spring constant of 7.0 N/m and set into simple harmonic motion with an amplitude of 5.0 cm.When the mass has 36% of its maximum kinetic energy,how far away is it from its equilibrium position?

A)1.8 cm

B)3.2 cm

C)3.4 cm

D)4.0 cm

E)4.4 cm

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16

Chapter 15: Waves

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Sample Questions

Q1) Two adjacent frequencies of transverse standing waves on a string held fixed at both ends are 1440 Hz and 1560 Hz.What is the fundamental frequency of the transverse standing waves on this string?

A)60 Hz

B)120 Hz

C)180 Hz

D)240 Hz

Q2) The vertical displacement due to a traveling wave moving horizontally is given by y(x,t)= 5.4 cos (0.4(rad/cm)x - 45(rad/s)t (sec))where x and y are in centimeters.The horizontal distance between the points whose phase differs by \(\pi\)/3 rad is

A)1.05 cm.

B)2.62 cm.

C)7.86 cm.

D)9.81 cm.

E)13.6 cm.

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Chapter 16: Sound

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Sample Questions

Q1) While standing on a sidewalk,you notice that you are halfway between a clock tower and a large building.The clock tower and the building are 170 m apart.When the clock bell strikes the hour,you hear an echo of the bell after hearing it directly from the clock tower.How long after hearing the bell from the clock tower do you hear the echo?

A)0.50 s

B)0.33 s

C)0.25 s

D)0.60 s

E)0.75 s

Q2) A guitarist tunes a string such that it is exactly in tune with a second string of equal linear mass density and length.Both vibrate with a fundamental frequency of 110.0Hz.He decreases the tension in one string so that he hears beats of 4.6Hz.What is the ratio of the tension of the first string to that of the second?

A)0.918

B)0.921

C)0.958

D)0.960

E)0.979

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Chapter 17: Temperature

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Sample Questions

Q1) What is the temperature of the Universe as determined by the cosmic microwave background radiation?

A)2.7 K

B)233 K

C)273 K

D)289 K

E)6000 K

Q2) 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

Q3) What temperature will be twice as warm as room temperature (20 degrees Celsius)

A)40S1U1P1\(\circ\)S1S1P0C

B)313S1U1P1\(\circ\)S1S1P0C

C)586S1U1P1\(\circ\)S1S1P0C

D)40 K

E)293 K

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Chapter 18: Heat and the First Law of Thermodynamics

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Sample Questions

Q1) It takes 2.7 * 10³ calories of energy to heat a small piece of aluminum from 100S1U1P1\(\circ\)S1S1P0F to 120S1U1P1\(\circ\)S1S1P0F.What is the mass of the piece of aluminum?

A)1.1 kg

B)2.5 kg

C)3.6 kg

D)4.2 kg

Q2) A 2.0-kg piece of steel with a temperature of 70S1U1P1\(\circ\)S1S1P0C is submerged in 1.0 kg of water at 15S1U1P1\(\circ\)S1S1P0C.At what temperature does the water/metal system reach equilibrium? The specific heat of steel is 0.107 cal/(g * K).

A)17S1U1P1\(\circ\)S1S1P0C

B)25S1U1P1\(\circ\)S1S1P0C

C)38S1U1P1\(\circ\)S1S1P0C

D)42S1U1P1\(\circ\)S1S1P0C

Q3) In which process is there no work done on a gas?

A)isothermal

B)isochoric

C)Isobaric

D)None are correct.

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Chapter 19: Ideal Gases

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Sample Questions

Q1) Two identical containers hold equal masses of oxygen in one and nitrogen in the other.The gasses are held at the same temperature.How does the pressure of oxygen compare to that of nitrogen?

A)P_O > P_N

B)P_O = P_N

C)P_O < P_N

D)It cannot be determined.

Q2) 15.0 liters of an ideal monatomic gas at a pressure of 100 * 10³ Pa is expanded adiabatically (no heat transfer)until the volume is tripled.If the initial temperature of the gas was 100 K,what was it final temperature after the expansion?

A)48.1 K

B)75.6 K

C)101 K

D)157 K

E)208 K

Q3) The specific heat of an ideal gas at constant pressure is never A)greater than the universal gas constant.

B)less than the universal gas constant.

C)used to determine the internal energy of an ideal gas.

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Page 21

Chapter 20: The Second Law of Thermodynamics

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Q1) A 0.750-kg iron bar is taken from a forge at 900S1U1P1\(\circ\)S1S1P0C and dropped into 14.00 kg of water at 20.0S1U1P1\(\circ\)S1S1P0C.Assuming that no energy is lost by heat to the surroundings as the water/iron reaches their final temperature,determine the total entropy change of the water.Assume that specific heat of iron is 448 J/(kg.K).

A)-444 J/K

B)-614 J/K

C)-756 J/K

D)-534J/K

E)444 J/K

Q2) How much work will need to be input to expel 5.0 J of heat to the hot reservoir of a Carnot heat pump operated between 20S1U1P1\(\circ\)S1S1P0C and 0S1U1P1\(\circ\)S1S1P0C?

A)0.23 J

B)0.37 J

C)0.56 J

D)0.68 J

E)0.34 J

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22

Chapter 21: Electrostatics

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Q1) A small ball with a mass of 40 g and a charge of -0.3 \(\mu\)C is suspended from the ceiling on a string.The ball is suspended a distance of 7.0 cm above an insulating floor.If a second small ball with a mass of 50 g and a charge of 0.6 \(\mu\)C is placed on the floor directly beneath the first ball,what is the tension in the string?

A)0.04 N

B)0.06 N

C)0.33 N

D)0.39 N

E)0.72 N

Q2) A charge Q₁ = Q is positioned on the x axis at x = a.Where should a charge Q₂ = 9Q be placed to produce a net electric force of zero on a charge placed at the origin?

A)at x = 2a

B)at x = -2a

C)at x = 3a

D)at x = -3a

E)at x = 4a

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Page 23

Chapter 22: Electric Fields and Gausss Law

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Q1) The electrons in a particle beam each have a kinetic energy of 1.6 * 10^-16 J,enter an electric field of 2000 N/C and are stopped.What is the stopping distance of these electrons?

A)3.2 m

B)2.0 m

C)0.25 m

D)4.0 m

E)0.50 m

Q2) A + 8.0-nC point charge is located in the center of a thick conducting spherical shell.The shell has an inner radius of 1.0 m,an outer radius of 1.2 m,and a charge of -3.0 nC.What is the magnitude of the electric field at r = 1.1 m?

A)0 N/C

B)22 N/C

C)38 N/C

D)60 N/C

E)110 N/C

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Chapter 23: Electric Potential

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Q1) The amount of work done to move a positive charge Q on an equipotential surface of 1000 V compared to that on an equipotential surface of 10 V is

A)the same.

B)less.

C)more.

D)dependent on distance travelled.

Q2) The electric potential at a point is space is given by the relation V = 23x - 27y + 11y² + 72.What is the x-component of the electric field (in V/m)at the point r = (3.0,2.0,1.0)?

A)-23

B)-95

C)95

D)-17

E)-29

Q3) Electric field lines always point

A)from higher potential to lower potential.

B)from lower potential to higher potential.

C)in the same direction as the equipotential lines.

D)in the opposite direction as the equipotential lines.

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Page 25

Chapter 24: Capacitors

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Q1) A parallel plate capacitor connected to a 2-V battery consists of two 1-cm square plates separated by 1 mm of air.How much work is done in inserting a sheet with a dielectric constant of 1.5 between the plates (in units of 10^-13 J)?

A)17.4

B)9.67

C)8.85

D)4.53

E)2.28

Q2) Suppose we have two capacitors connected in series with a 10 V battery.What is the energy stored in the circuit if the capacitance of one is C₁ = 50 mF and the other is C₂ = 100 mF?

A)9.67 J

B)2.33 J

C)1.67 J

D)3.33 J

E)7.50 J

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Chapter 25: Current and Resistance

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Q1) 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

Q2) N identical resistors are connected in series.The resistance of one of them is equal to R.What is the equivalent resistance of all N resistors?

A)R/N

B)R

C)NR

D)None are correct.

Q3) Two identical light bulbs are connected to a battery.Will the light bulbs be brighter if they are connected to the battery in series or in parallel?

A)in series

B)in parallel

C)The brightness will be the same in series and in parallel.

D)There is not enough information to determine an answer.

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27

Chapter 26: Direct Current Circuits

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Q1) 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.

Q2) An RC circuit has a time constant of 2.10 s.At t = 0,the capacitor is fully charged.At what time will the energy stored in the capacitor be half of its initial value?

A)0.728 s

B)1.35 s

C)1.46 s

D)1.83 s

E)2.58 s

Q3) A resistor and capacitor are connected in series in an open circuit.If a second identical resistor is connected in series in the circuit,the time constant for the circuit will A)decrease.

B)increase.

C)stay the same.

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Chapter 27: Magnetism

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Q1) A 25-turn square coil has a side of 0.210 m,is hinged along a horizontal side and carries a 6.00-A current.When placed in a vertical magnetic field pointing down and having a magnitude of 4.00 mT,the plane of the coil makes a 2.3S1U1P1\(\circ\)S1S1P0 angle with the vertical when the coil is in equilibrium.Determine the mass of the coil.Use g = 9.81 m/s².

A)0.452 kg

B)0.640 kg

C)0.320 kg

D)0.785 kg

E)0.904 kg

Q2) A proton with an initial velocity of (1.0x + 2.0y + 3.0z)* 10⁵ m/s enters a magnetic field of 0.50z T.Find the force on the proton.The mass of the proton is 1.67 * 10^-27 kg.Where x,y and z are unit vectors in the x,y and z directions,respectively.

A)(-1.6x - 0.80y)*10^-14 N

B)(-1.6x + 0.80y)*10^-14 N

C)(1.6x + 0.80y)*10^-14 N

D)(1.6x - 0.80y)*10^-14 N

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Page 29

Chapter 28: Magnetic Fields of Moving Charges

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Q1) Ampere's Law of magnetic fields is analogous to which law for electric fields?

A)Gauss's Law

B)Coulomb's Law

C)Newton's 2nd Law of Motion

D)None are correct.

Q2) A coaxial wire consists of a copper wire of radius 1 mm surrounded by a copper sheath of inside radius 1.5 mm and an outside radius 2 mm.A 3-A current flows in one direction down the core and in the opposite direction down the sheath.What is the magnitude of the magnetic field at a radius of 3 mm from the center of the wire?

A)0 T

B)1.25 µT

C)3.15 µT

D)4.20 µT

E)5.15 µT

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Chapter 29: Electromagnetic Induction

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Q1) A 2.0 m long solenoid of cross sectional area 1.4 m² and n=300 turns/m carries a current of 4.0 A.What is the energy stored in the solenoid?

A)3.4 J

B)3.1 J

C)2.5 J

D)2.2 J

Q2) Which of the following methods will induce a current in a loop of wire in a uniform magnetic field?

A)decreasing the strength of the field

B)rotating the loop about an axis parallel to the field

C)translating the loop about the field

D)All are correct.

E)None are correct.

Q3) The speed of a 15-cm long wire in a 100- mT magnetic field to produce a 3-V motional emf is

A)2 m/s.

B)25 m/s.

C)41 m/s.

D)200 m/s.

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Page 31

Chapter 30: Alternating Current Circuits

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Q1) A 3.0-\(\mu\)F capacitor was fully charged by being connected to a 9.0-V battery.The fully charged capacitor is then connected to a 0.50-H inductor.The maximum current in the inductor is

A)22 mA.

B)0.054 mA.

C)10.2 mA.

D)0.028 mA.

E)35 mA.

Q2) An LC circuit is driven by an AC source at what frequency if the inductor and capacitor have values of 1.5 mH and 22 nF,respectively,and if the rms voltage across each circuit element is half the supply rms voltage?

A)0.17 MHz

B)0.12 MHz

C)28 kHz

D)20 kHz

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Chapter 31: Electromagnetic Waves

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Q1) Which of the following exert the smallest amount of radiation pressure?

A)a 1 mW laser pointer on a 2mm diameter spot 1 m away

B)a 200 W light bulb on a 4mm diameter spot 10m away

C)a 100 W light bulb on a 2 mm diameter spot 4 m away

D)a 200 W light bulb on a 2 mm diameter spot 5 m away

E)All of the choices exert the same pressure.

Q2) There are two polarizing filters that are out of alignment by 30 degrees.If light of intensity 1.00 W/m² and initially polarized half-way between the two filters passes through the two filters,what is the intensity of the transmitted light?

A)0.375 W/m²

B)0.563 W/m²

C)0.700 W/m²

D)0.750 W/m²

E)0.837 W/m²

Q3) Which waves have the longest wavelength in the electromagnetic spectrum?

A)gamma rays

B)ultraviolet light

C)visible light

D)radio waves

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Page 33

Chapter 32: Geometric Optics

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Q1) A periscope consists of two flat mirrors and is used for viewing objects when an obstacle impedes the direct viewing.Suppose that Curios George is looking through a periscope at the man with the yellow hat whose hat is at d_o = 2.0 m from the upper mirror and that the two flat mirrors.If the image of the man is d_i = 2.75 m away from the lower mirror,what is the distance between the two mirrors?

A)0.75 m

B)1.15 m

C)0.50 m

D)1.5 m

E)4.75 m

Q2) 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 focal length is equal to the image distance

C)when the focal length is equal to half the object distance

D)when the focal length is zero

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34

Chapter 33: Lenses and Optical Instruments

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Q1) Two lenses are used to create an image of a 15.0-cm tall source that is located 43.0 cm to the left of the first lens,which is a biconcave thin polycarbonate lens (index of refraction n = 1.67)and has a radius of curvature of 25.0 cm for both front and back surfaces.The second lens is 36.0 cm to the right of the first lens.The second lens is a converging lens with a focal length magnitude of 25.0 cm.What is the height of the image?

A)4.55 cm

B)5.93 cm

C)2.89 cm

D)12.3 cm

E)7.96 cm

Q2) A brown newt sits 25 cm from a convex lens having a 12-cm focal length.Which is true of the newt's image?

A)It is real,inverted,and smaller.

B)It is real,inverted,and larger.

C)It is real,upright,and smaller.

D)It is real,upright,and larger.

E)It is virtual,upright,and smaller.

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35

Chapter 34: Wave Optics

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Q1) A Young's interference experiment is performed with monochromatic green light (\(\lambda\) = 470 nm).The separation between the slits is 0.120 mm,and the interference pattern on a screen shows the first side maximum 3.5 mm from the center of the pattern.How far away from the slits is the screen?

A)1.0 m

B)0.91 m

C)0.89 m

D)0.76 m

E)0.64 m

Q2) In a single-slit diffraction experiment,what is the largest slit width for which there are no minima when the wavelength of the incident light on the single slit is 600 nm?

A)300 nm

B)600 nm

C)900 nm

D)1200 nm

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Chapter 35: Relativity

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Q1) Two stationary space stations are separated by a distance of 20 light-years as measured by someone on one of the space stations.A spaceship traveling at 0.90 c relative to the space stations passes by one of the space stations heading directly towards the other one.How long will it take to reach the other space station as measured by someone on the spaceship?

A)7.0 years

B)8.7 years

C)9.7 years

D)22.2 years

E)24.7 years

Q2) A beam of pions (a pion with rest mass 139.5 MeV/c²)travels down a beam pipe in a laboratory such that the pions have kinetic energy equal to half their rest energy.The pion lifetime is 26 ns.Given this information,how far,on average,will the pions travel in the lab before decaying? Use 3.0 x 10⁸ for the speed of light.

A)5.8 m

B)8.7 m

C)6.8 m

D)4.5 m

E)5.2 m

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Page 37

Chapter 36: Quantum Physics

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Q1) X-rays having energy of 450.0 keV undergo Compton scattering from a target.The scattered rays are detected at 20.0S1U1P1\(\circ\)S1S1P0relative to the incident rays.The energy of the recoiling electron is

A)284 keV.

B)25.2 keV.

C)297 keV.

D)22.6 keV.

E)255 keV.

Q2) A soldering iron glows at 372\(\lambda\)C.What is the dominant wavelength emitted by the iron?

A)270 µm

B)11 µm

C)7.8 µm

D)4.5 µm

E)650 nm

Q3) The Pauli exclusion principle applies to A)fermions only.

B)bosons only.

C)both fermions and bosons. D)electrons only.

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Chapter 37: Quantum Mechanics

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Q1) A particle in a one dimensional box of width L in the n = 3 state is most likely to be found at

A)L/6,L/2,5L/6.

B)L/4,L/2,3L/4.

C)L/3,L/2,L.

D)L/2,2L/3,3L/4.

Q2) What is |g(x)|² for g(x)= 17i - (8+7i)x?

A)289 - 238x + 113x²

B)289 - 238x - 15x²

C)289 + 238x + 113x²

D)289 + 238x - 15x²

E)-289 + 238x - 113x²

Q3) Given the complex function f(x)= (5 - 3i)+ (2 + 4i)x,what is |f(1)|²?

A)29

B)40

C)48

D)50

E)100

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Chapter 38: Atomic Physics

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Q1) How many wave functions (different combinations of l and m)are possible in the n = 6 level of hydrogen?

A)6

B)26

C)30

D)36

E)720

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) The energy contained in a length of a 3.00-mW laser beam in vacuum is 1.80 * 10^-10 J.What is the length of the beam?

A)2.0 m

B)24 m

C)15 m

D)18 m

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Page 40

Chapter 39: Elementary Particle Physics

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Q1) If a newly discovered boson has a maximum range of 7.1 * 10^-17 m,a spin of 0 and zero electrical charge,what is its mass?

A)78.9 GeV/c²

B)34.2 GeV/c²

C)125 GeV/c²

D)2.78 GeV/c²

E)150 GeV/c²

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 greatest 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) The volume of a nucleus is proportional to

A)the atomic number Z.

B)the atomic mass number

C)the neutron number N.

D)the number of electrons.

Q2) Which of the following would you expect to decay via b⁺ decay?

A)¹²C

B)¹³²Sn

C)⁵⁶Fe

D)⁷⁴Kr

E)¹⁷N

Q3) A nuclear fission power plant produces about 2.00 GW of electrical power.Assume that that each fission produces 200.0 MeV of energy and that the mass of ²³⁵U consumed each day is 5.50 kg.The overall efficiency of the plant is A)32.4%.

B)38.3%.

C)41.5%.

D)46.2%.

E)51.7%.

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Page 42