Survey of Physics Solved Exam Questions - 3319 Verified Questions

Survey of Physics

Solved Exam Questions

Course Introduction

Survey of Physics offers a comprehensive introduction to the fundamental concepts and principles of physics for non-science majors. The course covers key topics such as motion, forces, energy, heat, sound, light, electricity, magnetism, and modern physics, emphasizing conceptual understanding over mathematical rigor. Through lectures, demonstrations, and hands-on activities, students explore the relevance of physics in everyday life and develop critical thinking and problem-solving skills. This course is designed to provide a broad overview of physical phenomena and their applications, preparing students to appreciate the role of physics in the world around them.

Recommended Textbook

College Physics 1st Edition by Eugenia Etkina

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30 Chapters

3319 Verified Questions

3319 Flashcards

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Chapter 1: Introduction

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Sample Questions

Q1) A certain \(\text { CD-ROM }\) disk can store 600 megabytes of information.If an average word requires 9.0 bytes of storage,how many words can be stored on one disk?

A)6.7 × 10⁷ words

B)5.4 × 10⁹ words

C)2.1 × 10⁷ words

D)2.0 × 10⁹ words

Answer: A

Q2) A reasonable estimate for the mass of a typical new-born baby is

A)1 kg.

B)3 kg.

C)10 kg.

D)20 kg.

Answer: B

Q3) Which one of the following numbers is equivalent to the number 0.0001776?

A)1.776 × 10^-4

B)17.76 × 10^-3

C)1776 × 10^-5

D)177.6 × 10^-7

Answer: A

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Page 3

Chapter 2: Kinematics: Motion in One Dimension

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Sample Questions

Q1) In a ballistics test,a bullet moving horizontally with a speed of 500 m/s strikes a sandbag and penetrates a distance of 10.0 cm.

(a)What is the magnitude of the average acceleration of the bullet in the sandbag?

(b)How many milliseconds does it take the bullet to come to rest in the sandbag?

Answer: (a)1.25 × 10⁶ m/s² (b)0.400 ms

Q2) Two objects are dropped from a bridge,an interval of 1.0 s apart.Neglect air.During the time that both objects continue to fall,their separation A)increases.

B)decreases.

C)stays constant.

D)increases at first, but then stays constant.

E)decreases at first, but then stays constant.

Answer: A

Q3) Arthur and Betty start walking toward each other when they are 100 m apart.Arthur has a speed of 3.0 m/s and Betty has a speed of 2.0 m/s.How long does it take for them to meet?

Answer: 20 seconds

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4

Chapter 3: Newtonian Mechanics

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Sample Questions

Q1) A 45.0-kg person steps on a scale in an elevator.The scale reads 460 N.What is the magnitude of the acceleration of the elevator?

A)4.91 m/s²

B)9.81 m/s²

C)46.9 m/s²

D)0.206 m/s²

E)0.422 m/s²

Answer: E

Q2) A 10-kg object is hanging by a very light wire in an elevator that is traveling upward.The force that the wire exerts on the object is measured to be 75 N.What are the magnitude and direction of the acceleration of the elevator?

Answer: 2.3m/s²,downward

Q3) A box is placed on a table which rests on the floor.The box pushes on the table; the Newton's third law pair to the the box's push on the table is the table's push on the floor.

A)True

B)False

Answer: False

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Page 5

Chapter 4: Applying Newtons Laws

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Sample Questions

Q1) A 400-kg box is lifted vertically upward with constant velocity by means of two cables pulling at 40.0° on either side of the vertical direction.What is the tension force that each cable exerts on the box?

A)231 N

B)400 N

C)800 N

D)2560 N

E)3920 N

Q2) A boulder rolls off of a very high cliff.If you disregard air,while it is falling,its trajectory is never truly vertical.

A)True

B)False

Q3) The magnitude of a vector can never be less than the magnitude of any of its components.

A)True

B)False

Q4) A 590-kg rocket is at rest on the launch pad.What upward thrust force is needed to accelerate the rocket uniformly to an upward speed of 28 m/s in 3.3 s?

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Chapter 5: Circular Motion

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Sample Questions

Q1) Two horizontal curves on a bobsled run are banked at the same angle,but one has twice the radius of the other.The safe speed (for which no friction is needed to stay on the run)for the smaller radius curve is v.What is the safe speed on the larger-radius curve?

A)v / \(\sqrt { 2 }\)

B)2v

C)v \(\sqrt { 2 }\)

D)v/2

Q2) At a given point above Earth's surface,the free-fall acceleration is equal to \(7.8 \mathrm {~m} / \mathrm { s } ^ { 2 }\) What is the altitude of this point above Earth's surface? (G = 6.67 × 10^-11 N m²/kg²,M_earth = 5.97 × 10²⁴ kg,R_earth = 6.38 × 10⁶ m)

A)770 km

B)970 km

C)1500 km

D)2000 km

E)2400 km

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Page 7

Chapter 6: Impulse and Linear Momentum

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Sample Questions

Q1) Two ice skaters suddenly push off against one another starting from a stationary position.The 45-kg skater acquires a speed of 0.375 m/s relative to the ice.What speed does the 60-kg skater acquire relative to the ice?

A)0.50 m/s

B)0.28 m/s

C)0.38 m/s

D)0.75 m/s

E)0.00 m/s

Q2) A small car meshes with a large truck in a head-on collision.Which of the following statements concerning the magnitude of the momentum change during the collision is correct? (There could be more than one correct choice.)

A)The truck has the greater magnitude momentum change.

B)The small car has the greater magnitude momentum change.

C)The small car and the truck have the same magnitude momentum change.

D)The magnitude of the momentum change of each one is inversely proportional to its mass.

E)The magnitude of the momentum change of each one is directly proportional to its mass.

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Chapter 7: Work and Energy

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Sample Questions

Q1) A girl throws a stone from a bridge.Consider the following ways she might throw the stone.The speed of the stone as it leaves her hand is the same in each case. Case A: Thrown straight up.

Case B: Thrown straight down.

Case C: Thrown out at an angle of 45° above horizontal.

Case D: Thrown straight out horizontally.

In which case will the speed of the stone be greatest when it hits the water below if there is no significant air resistance?

A)Case A

B)Case B

C)Case C

D)Case D

E)The speed will be the same in all cases.

Q2) Suppose you left five 100-W light bulbs burning in the basement for two weeks.If electricity costs 10.0¢/kWh,(a)how much did the electricity cost (to the nearest dollar)to leave those bulbs on,and (b)how many joules of electrical energy did they consume?

Q3) You want to store 1,000 J of energy in an ideal spring when it is compressed by only 2.5 cm.What should be the spring constant of this spring?

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Chapter 8: Extended Bodies at Rest

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Sample Questions

Q1) A man in a gym is holding an 8.0-kg object at arm's length,a distance of 0.55 m from his shoulder joint.What is the torque about his shoulder joint due to the object if his arm is held at 30° below the horizontal?

A)22 N m

B)2.2 N m

C)4.4 N m

D)13 N m

E)37 N m

Q2) A light board that is 10 m long is supported by two sawhorses,one at one end of the board and a second at the midpoint.A 40-N object is placed between the two sawhorses,3.0 m from the end and 2.0 m from the center.What magnitude forces do the sawhorses exert on the board?

Q3) An 82-kg painter stands on a long horizontal board 1.55 m from one end.This 27-kg board is uniform,5.5 m long,and supported at each end by vertical posts.

(a)What is the magnitude of the total force provided by both posts?

(b)With what force does the post that is closest to the painter push upward on the board?

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10

Chapter 9: Rotational Motion

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Sample Questions

Q1) A solid sphere and a solid cylinder,both uniform and of the same mass and radius,roll without slipping at the same forward speed.It is correct to say that the total kinetic energy of the solid sphere is A)more than the total kinetic energy of the cylinder. B)less than the total kinetic energy of the cylinder. C)equal to the total kinetic energy of the cylinder.

Q2) A 5.0-m radius playground merry-go-round with a moment of inertia of 2000 kg m² is rotating freely with an angular speed of 1.0 rad/s.Two people,each of mass 60 kg,are standing right outside the edge of the merry-go-round and suddenly step onto the edge with negligible speed relative to the ground.What is the angular speed of the merry-go-round right after the two people have stepped on?

A)0.20 rad/s

B)0.40 rad/s

C)0.60 rad/s

D)0.80 rad/s

E)0.67 rad/s

Q3) A cylinder of radius 8.0 cm rolls 20 cm in 5.0 s without slipping.Through how many degrees does the cylinder turn during this time?

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11

Chapter 10: Gases

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Sample Questions

Q1) The temperature in your classroom is closest to A)68 K.

B)68°C.

C)50°C.

D)295 K.

Q2) When a box rests on a round sheet of wood on the ground,it exerts an average pressure p on the wood.If the wood is replaced by a sheet that has half the diameter of the original piece,what is the new average pressure?

A)4p

B)2p

C)p \(\sqrt { 2 }\)

D)p/2

E)p/4

Q3) Express -40°C in °F.

A)-72°F

B)-54°F

C)-40°F

D)4.4°F

Q4) What is absolute zero on the (a)Celsius scale and (b)on the Fahrenheit scale?

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Chapter 11: Static 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.Where is the buoyant force exerted on the boat by the water greater?

A)in salt water

B)in fresh water

C)The buoyant force is the same in both cases.

Q2) A block of metal weighs 40 N in air and 30 N in water.What is the buoyant force that the water exerts on the block? The density of water is 1000 kg/m³.

A)10 N

B)30 N

C)40 N

D)70 N

Q3) What buoyant force is exerted by water on a 0.60-kg solid gold crown when it is immersed in water? The density of gold is 19.3 × 10³ kg/m³ and that of water is 1000 kg/m³.

A)3.0 × 10^-5 N

B)3.0 × 10^-4 N

C)3.0 × 10^-2 N

D)0.30 N

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Chapter 12: Fluids in Motion

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Sample Questions

Q1) When you blow some air above a paper strip,the paper rises.This happens because

A)the air above the paper moves faster and the pressure is higher.

B)the air above the paper moves faster and the pressure is lower.

C)the air above the paper moves faster and the pressure remains constant.

D)the air above the paper moves slower and the pressure is higher.

E)the air above the paper moves slower and the pressure is lower.

Q2) Water flows through a pipe.The diameter of the pipe at point B is larger than at point A.Where is the water pressure greatest?

A)at point A

B)at point B

C)It is the same at both A and B.

Q3) Water flowing through a cylindrical pipe suddenly comes to a section of pipe where the diameter decreases to 86% of its previous value.If the speed of the water in the larger section of the pipe was \(32 \mathrm {~m} / \mathrm { s }\) what is its speed in this smaller section if the water behaves like an ideal incompressible fluid?

A)43 m/s

B)37 m/s

C)28 m/s

D)24 m/s

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Page 14

Chapter 13: First Law of Thermodynamics

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Sample Questions

Q1) A 400-g stainless steel tea kettle containing 500 g of water is on the stove.The portion of the tea kettle that is in contact with the heating element has an area of 0.090 m² and is 2.0 mm thick.At a certain moment,the temperature of the water is 75°C,and it is rising at the rate of 3.0 C° per minute.What is the difference in temperature between the inside and the outside of the bottom of the tea kettle? Assume that the inner surface of the kettle is at the same temperature as the water inside.The thermal conductivity of stainless steel is 16.3 W/m K,the specific heat of the steel is 448 J/kg K,and the specific heat of water is 4186 J/kg .K.

A)2.2 C°

B)1.5 C°

C)1.1 C°

D)0.50 C°

E)0.15 C°

Q2) A beaker of negligible heat capacity contains 456 g of ice at -25.0°C.A lab technician begins to supply thermal energy through the process of heating to the container at the rate of 1000 J/min.How long after starting will the ice begin to melt,assuming all of the ice has the same temperature? The specific heat of ice is 2090 J/kg K and the latent heat of fusion of water is 33.5 × 10⁴ J/kg.

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Chapter 14: Second Law of Thermodynamics

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Sample Questions

Q1) What is the change in entropy when 15.0 g of water at 100°C are turned into steam at 100°C? The latent heat of vaporization of water is 22.6 × 10⁵ J/kg.

A)90.8 J/K

B)-90.8 J/K

C)339 J/K

D)-339 J/K

E)0 J/K

Q2) On a cold winter day,the outside temperature is -20°C and the inside temperature is maintained at 20°C.There is a net thermal energy flow to the outside through the walls,roof,etc.,of 25 kW.At what rate is the entropy of the air outside the house changing as a result of this process?

A)+13 W/K

B)-25 W/K

C)85 W/K

D)+99 W/K

E)0 W/K

Q3) During each cycle,a thermodynamic engine takes in 4.0 J of energy,does 1.0 J of work,and expels 3.0 J of energy.What is its efficiency?

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Chapter 15: Electric Charge force and Energy

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Sample Questions

Q1) An alpha particle (a helium nucleus,having charge +2e and mass 6.64 × 10^-27 kg)moves head-on at a fixed gold nucleus (having charge +79e).If the distance of closest approach is 2.0 × 10^-10 m,what was the speed of the alpha particle when it was very far away from the gold? (k = 1/4 ₀ = 9.0 × 10⁹ N m²/C²,e = 1.60 × 10^-19 C)

A)2.3 × 10⁵ m/s

B)4.6 × 10⁵ m/s

C)2.3 × 10⁶ m/s

D)4.6 × 10⁶ m/s

Q2) An electric dipole with ±5.0 C point charges is positioned so that the positive charge is \(1.0 \mathrm {~mm}\) to the right of the origin and the negative charge is at the origin.How much work does it take to bring a \(3.0 - \mu \mathrm { C }\) point charge from very far away to the point x = 3.0 mm,y = 0.0 mm? (k = 1/4 ₀ = 9.0 × 10⁹ N m²/C²)

A)23 J

B)110 J

C)19 J

D)49 J

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Chapter 16: The Electric Field

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Sample Questions

Q1) The \(\vec { E }\) field at point P due to a point charge Q a distance R away from P has magnitude E.In order to double the magnitude of the field at P,you could

A)double the distance to 2R.

B)double the charge to 2Q.

C)reduce the distance to R/2.

D)reduce the distance to R/4.

E)double the charge to 2Q and at the same time reduce the distance to R/2.

Q2) A parallel-plate capacitor is connected to a battery and becomes fully charged.The capacitor is then disconnected,and the separation between the plates is increased in such a way that no charge leaks off.As the plates are being separated,the energy stored in this capacitor

A)increases.

B)decreases.

C)does not change.

D)become zero.

Q3) A 25.0-V potential source (a battery)is connected across the plates of a 6.66-µF air-filled parallel-plate capacitor having plates that are 1.22 mm apart.What energy density does it produce between the plates? ( ₀ = 8.85 × 10^-12C²/N m²)

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Page 18

Chapter 17: Dc Circuits

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Sample Questions

Q1) The resistivity of the material of a wire is 1.76 × 10^-8 m.If the diameter of the wire is 2.00 mm and its length is 2.00 m,what is its resistance?

A)112

B)11.2

C)1.12

D)0.112

E)0.0112

Q2) A flashlight draws 0.133 A from a 3.0-V battery pack.In 2.0 minutes (a)how much charge flows from the battery,(b)how much energy does the battery supply,and (c)how many electrons have passed any point in the circuit every second?

Q3) A 200- resistor is rated at 1/4 W.What is the maximum voltage that can safely be connected across it?

A)0.71 V

B)7.1 V

C)50 V

D)0.25 V

Q4) What resistance must be connected in parallel with a 633- resistor to produce an equivalent resistance of 205 ?

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Page 19

Chapter 18: Magnetism

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Sample Questions

Q1) A flat coil containing 25 identical loops carries 6.4 A of current.When it is placed in a uniform magnetic field of 0.22 T that is oriented parallel to the plane of the coil,the magnetic torque on it is 3.7 N m.

(a)What is the magnetic moment of the coil?

(b)What is the area of each loop?

Q2) A flat circular loop of wire of radius 0.50 m that is carrying a 2.0-A current is in a uniform magnetic field of 0.30 T.What is the magnitude of the magnetic torque exerted on the loop when the plane of its area is perpendicular to the \(\vec { B }\) field?

A)0.00 N m

B)0.41 N m

C)0.47 N m

D)0.52 N m

E)0.58 N m

Q3) Which one of the following statements is correct?

A)Earth's geographic north pole is the north pole of Earth's magnetic field.

B)Earth's geographic south pole is the south pole of Earth's magnetic field.

C)The north pole of a magnet points towards Earth's geographic north pole.

D)The north pole of a magnet points towards Earth's geographic south pole.

E)None of the above statements is correct.

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Page 20

Chapter 19: Electromagnetic Induction

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Sample Questions

Q1) A flat rectangular coil with dimensions of 8.0 cm × 10 cm is dropped from a zero magnetic field position into a 1.4-T \(\vec { B }\) field in 0.10 s.The coil has 60 turns and is perpendicular to the \(\vec { B }\) field.What is the average induced emf in the coil as a result of this action?

A)8.6 V

B)2.4 V

C)6.7 V

D)3.6 V

E)0 V

Q2) A flat coil is wrapped with 200 turns of very thin wire on a square frame with sides 18 cm long.A uniform magnetic field is applied perpendicular to the plane of the coil.If the magnitude of the \(\vec { B }\) field changes uniformly from 0.50 T to 0.00 T in 8.0 s,find

the emf induced in the coil.

A)2.1 mV

B)4.1 mV

C)0.21 V

D)0.41 V

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Chapter 20: Vibrational Motion

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Sample Questions

Q1) If the frequency of the motion of a simple harmonic oscillator is doubled,by what factor does the maximum speed of the oscillator change?

A)2

B)4

C)It does not change.

D)1/2

E)1/4

Q2) A pendulum of length L is suspended from the ceiling of an elevator.When the elevator is at rest the period of the pendulum is T.How does the period of the pendulum change when the elevator moves upward with constant velocity?

A)The period does not change.

B)The period increases.

C)The period decreases.

D)The period becomes zero.

E)The period increases if the upward acceleration is more than g/2 but decreases if the upward acceleration is less than g/2.

Q3) If a pendulum makes 12 complete swings in 8.0 s,what are its (a)frequency and (b)period?

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Chapter 21: Mechanical Waves

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Sample Questions

Q1) Two strings both vibrate at exactly 819 Hz.The tension in one of them is then increased slightly.As a result,six beats per second are heard when both strings vibrate.What is the new frequency of the string that was tightened?

A)825 Hz

B)813 Hz

C)822 Hz

D)816 Hz

Q2) You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind at constant speed and you perceive the frequency as \(1340 \mathrm {~Hz}\) You are relieved that he is in pursuit of a different driver when he continues past you,but now you perceive the frequency as \(1300 \mathrm {~Hz} .\) What is the speed of the police car? The speed of sound in air is \(343 \mathrm {~m} / \mathrm { s } .\)

A)38.4 m/s

B)30 m/s

C)39.2 m/s

D)40.1 m/s

E)41.7 m/s

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Page 23

Chapter 22: Reflection and Refraction

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Q1) A narrow light beam in vacuum contains light of two wavelengths,480 nm and 700 nm.It strikes a flat piece of glass at an angle of incidence of 60.000°.The index of refraction of the glass is 1.4830 at 480 nm and 1.4760 at 700 nm.Determine the angle between the two wavelengths as the light travels in the glass.

Q2) A point source of light is positioned 20.0 m below the surface of a lake.What is the diameter of the largest circle on the surface of the water through which light can emerge into the air? The index of refraction of water is 1.33.

Q3) A flashlight beam makes an angle of 60° with the plane of the surface of a calm lake before it enters the water.In the water what angle does the beam make with the plane of the surface? The index of refraction of water is 1.33.

A)0°

B)30°

C)60°

D)22°

E)68°

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Chapter 23: Mirrors and Lenses

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Sample Questions

Q1) What is the uncorrected near point of a farsighted person who can comfortably read a newspaper held 25 cm from his eyes when he wears +3.33-diopter contact lenses?

A)1.5 m

B)0.50 m

C)1.9 m

D)0.75 m

E)0.60 m

Q2) A cup that is 6.0 cm tall is in front of a concave lens.The image of the cup is 2.5 cm tall and 7.5 cm from the lens.What is the focal length of the lens?

A)-6.0 cm

B)-7.5 cm

C)-13 cm

D)+18 cm

E)+6.0 cm

Q3) An object is placed 9.5 cm in front of a convex lens with a focal length of magnitude 24 cm.

(a)Where is the image formed and how far is it from the lens?

(b)What is the magnification produced by the lens?

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Chapter 24: Wave Optics

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Sample Questions

Q1) A 360-nm thick oil film floats on the surface of a pool of water.The indices of refraction of the oil and the water are 1.50 and 1.33,respectively.When the surface of the oil is illuminated from above at normal incidence with white light,what is the wavelength of light between 400 nm to 800 nm wavelength that is most weakly reflected?

A)520 nm

B)540 nm

C)560 nm

D)580 nm

E)600 nm

Q2) Light of wavelength 550 nm in air is found to travel at 1.96 × 10⁸ m/s in a certain liquid.What are the frequency and wavelength of the light in this liquid? (c = 3.0 × 10⁸ m/s)

Q3) A soap bubble,when illuminated at normal incidence with light of 463 nm,appears to be especially reflective.If the index of refraction of the film is 1.35,what is the minimum thickness the soap film can be if it is surrounded by air?

Q4) Red light with a wavelength of 650 nm travels from air into a liquid with an index of 1.33.What are the frequency and wavelength of the light in the liquid? (c = 3.0 × 10⁸ m/s)

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Page 26

Chapter 25: Electromagnetic Waves

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Sample Questions

Q1) Which one of the following types of electromagnetic wave travels through space the fastest?

A)radio waves

B)infrared

C)ultraviolet

D)microwaves

E)They all travel through space at the same speed.

Q2) What is the wavelength used by a radio station that broadcasts at a frequency of 920 kHz? (c = 3.00 × 10⁸ m/s)

A)22.6 m

B)226 m

C)326 m

D)175 m

E)276 m

Q3) Unpolarized light of intensity I₀ passed through an ideal polarizing sheet with its polarizing axis at the 12 o'clock position and then through a second ideal sheet with its polarizing axis at the 1 o'clock position.What is the intensity of the emerging light in terms of I₀?

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Chapter 26: Special Relativity

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Q1) A certain unstable particle has a mean lifetime of 1.52 × 10^-6 s.This is the time interval between its creation in a nuclear process and its extinction into decay products,as measured in a frame of reference at rest with respect to the particle.An average such particle is observed by a scientist on Earth to travel 342 m in its lifetime.What is the speed of the particle relative to Earth? (c = 3.00 × 10⁸ m/s)

A)0.821c

B)0.681c

C)0.600c

D)0.551c

E)0.335c

Q2) Two satellites with equal rest masses of 100 kg are traveling toward each other in deep space.They have identical speeds of 0.600c.The satellites collide and somehow manage to stick together.What is the rest mass of the combined object after the collision?

A)200 kg

B)225 kg

C)250 kg

D)275 kg

E)300 kg

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Chapter 27: Quantum Optics

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Q1) When a metal is illuminated by light,photoelectrons are observed provided that the wavelength of the light is less than 520 nm.What is the metal's work function? (c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J s,1 eV = 1.60 × 10^-19 J)

A)2.4 eV

B)2.6 eV

C)2.8 eV

D)3.0 eV

Q2) If the absolute temperature of an object is tripled,the thermal power radiated by this object (assuming that its emissivity and size are not affected by the temperature change)will

A)increase by a factor of 3.

B)increase by a factor of 9.

C)increase by a factor of 18.

D)increase by a factor of 27.

E)increase by a factor of 81.

Q3) The human eye can just detect green light of wavelength 500 nm if it arrives at the retina at the rate of 2 × 10^-18 W.How many photons arrive each second? (c = 3.0 × 10⁸ m/s,h = 6.626 × 10^-34 J s)

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Chapter 28: Atomic Physics

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Q1) Which of the following actions will increase the de Broglie wavelength of a speck of dust? (There could be more than one correct choice.)

A)Increase its mass.

B)Increase its speed.

C)Decrease its mass.

D)Decrease its speed.

E)Decrease its momentum.

Q2) How "slow" must a 200-g ball move to have a de Broglie wavelength of 1.0 mm? (h = 6.626 × 10^-34 J s)

Q3) What is the maximum number of electrons that can occupy the g subshell?

A)10

B)14

C)18

D)22

Q4) If a proton and an electron have the same de Broglie wavelengths,which one is moving faster?

A)the electron

B)the proton

C)They both have the same speed.

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Chapter 29: Nuclear Physics

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Q1) Polonium-216 decays to lead-212 by emitting what kind of nuclear radiation?

A)alpha

B)beta-minus

C)beta-plus

D)gamma

E)x-rays.

Q2) An particle is also known as A)an electron.

B)a positron.

C)a helium nucleus.

D)a high-energy photon.

Q3) The symbol for a certain isotope of radium is \(^{226} _{88} Ra\).How many nucleons are there in the nucleus of this isotope?

A)88

B)138

C)214

D)226

E)314

Q4) Write the standard nuclear notation for the following nuclei: hydrogen-2,sulfur-33,and lead-207.

Page 31

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Chapter 30: Particle Physics

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Q1) An electron and a positron,both essentially at rest,annihilate each other,emitting two identical photons in the process.What is the wavelength of these photons? The mass of an electron or positron is 9.11 × 10^-31 kg.(h = 6.626 × 10^-34 J s,c = 3.00 × 10⁸ m/s)

A)1.21 × 10^-12 pm

B)1.73 pm

C)2.42 pm

D)3.07 pm

E)3.46 pm

Q2) Elementary particles that experience the weak nuclear force but not the strong nuclear force are called A)leptons.

B)hadrons.

C)mesons.

D)bosons.

E)baryons.

Q3) What combination of quarks produces a neutron and what are the electric charges on these quarks,expressed in terms of e?

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