Physics for Pre-Medical Students Solved Exam Questions - 2739 Verified Questions

Physics for Pre-Medical Students Solved

Exam Questions

Course Introduction

This course offers a comprehensive introduction to fundamental physics concepts tailored for pre-medical students, emphasizing the principles and applications relevant to medicine and the life sciences. Topics include mechanics, fluid dynamics, thermodynamics, waves, optics, electricity, and magnetism, with a persistent focus on how these physical theories are essential to understanding biological systems and medical technologies. The curriculum integrates problem-solving skills with real-world medical examples, ensuring students are well-prepared for the physics portion of medical college admissions tests and capable of applying physics concepts within future healthcare contexts.

Recommended Textbook

College Physics 11th Edition by Raymond A. Serway

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30 Chapters

2739 Verified Questions

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Chapter 1: Units, Trigonometry, and Vectors

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Sample Questions

Q1) Assume when using a meter stick measuring can be done so that the last significant figure is in the tenth of a millimeter digit.If you are measuring an object with length between 8 and 9 cm,how many significant figures will result if you only use the part of the meter stick between the 82-cm and 93-cm positions?

A)0

B)2

C)3

D)4

E)more than 4

Answer: C

Q2) Find the sum of the following two vectors: (i)50 units due east and (ii)100 units 30° south of west.

A)100 units 30° south of west

B)62 units 54° south of west

C)87 units 60° south of west

D)62 units 15° south of west

Answer: B

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Chapter 2: Motion in One Dimension

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Q1) On a position-time graph for a particle,suppose the plot starts at some positive position and as the time goes on the curve gets steeper and steeper while curving upwards.Which of the following must be true?

A)The speed of the particle is constant.

B)The acceleration of the particle is constant.

C)The speed of the particle is decreasing.

D)The acceleration of the particle is positive.

Answer: D

Q2) A bird,accelerating from rest at a constant rate,experiences a displacement of 25 m in 12 s.What is its acceleration?

A)0.18 m/s²

B)0.35 m/s²

C)0.44 m/s²

D)0.26 m/s²

E)0.53 m/s²

Answer: B

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Chapter 3: Motion in Two Dimensions

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Q1) What is the magnitude of the horizontal-velocity component of the rock as it hits the ground?

A)79.5 m/s

B)8.81 m/s

C)58.7 m/s

D)7.39 m/s

Answer: D

Q2) A baseball leaves the bat with a speed of 47 m/s and an angle of 45° above the horizontal.A 5.0-m-high fence is located at a horizontal distance of 137 m from the point where the ball is struck.Assuming the ball leaves the bat 1.0 m above ground level,by how much does the ball clear the fence?

A)59.7 m

B)47.7 m

C)49.7 m

D)121 m

Answer: C

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Chapter 4: Newtons Laws of Motion

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Q1) Five boys are pushing on a snowball,and each is pushing with a force of 10.0.0 N.However,each boy is pushing in a different direction.They are pushing north,northeast,east,southeast,and south.(Each boy is pushing at an angle of 45.0° relative to his neighbor. )What is the magnitude of the total force on the ball?

A)0

B)14.1 N

C)24.1 N

D)11.4 N

E)48.3 N

Q2) It is late and Carlos is sliding down a rope from his third-floor window to meet his friend Juan.As he slides down the rope faster and faster,he becomes frightened and grabs harder on the rope,increasing the tension in the rope.As soon as the upward tension in the rope becomes equal to his weight:

A)Carlos will stop.

B)Carlos will slow down.

C)Carlos will continue down at a constant velocity.

D)the rope must break.

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Page 6

Chapter 5: Energy

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Q1) A block is projected with speed v across a horizontal surface and slides to a stop due to friction.The same block is then projected with the same speed v up an incline where is slides to a stop due to friction.In which case did the total mechanical energy of the block decrease the least?

A)This problem cannot be solved since it was not indicated whether the horizontal surface and the incline both had the same coefficient of kinetic friction.

B)The case on the horizontal surface had the least decrease in total mechanical energy.

C)The case on the inclined surface had the least decrease in total mechanical energy.

D)In both cases the decrease in mechanical energy was the same.

Q2) An amount of work equal to 2.0 J is required to compress the spring in a spring-gun.What is the "launch speed" of a 26.0-g marble?

A)12.4 m/s

B)13.4 m/s

C)8.8 m/s

D)3.92 m/s

E)0.392 m/s

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Chapter 6: Momentum, Impulse, and Collisions

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Sample Questions

Q1) Object 1 has twice the mass of Object 2.Each of the objects has the same magnitude of momentum.Which of the following statements is true?

A)Both objects can have the same kinetic energy.

B)One object has 0.707 times the kinetic energy of the other.

C)One object has twice the kinetic energy of the other.

D)One object has 4 times the kinetic energy of the other.

Q2) Two objects,one less massive than the other,collide elastically and bounce back after the collision.If the two originally had velocities that were equal in size but opposite in direction,then which one will be moving faster after the collision?

A)The less massive one.

B)The more massive one.

C)The speeds will be the same after the collision.

D)There is no way to be sure without the actual masses.

Q3) The impulse experienced by a body is equivalent to its change in: A)velocity.

B)kinetic energy.

C)momentum.

D)None of the above choices are valid.

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Page 8

Chapter 7: Rotational Motion and Gravitation

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Sample Questions

Q1) A satellite is in a circular orbit about the Earth at a distance of two Earth radii above the surface.What is the speed of the satellite? (The radius of the Earth is 6.4 × 10⁶ m,and G = 6.67 × 10 ¹¹ N × m²/kg². )

A)2 800 m/s

B)4 600 m/s

C)5 600 m/s

D)17 000 m/s

Q2) The Earth's orbit is closest to the Sun in January and farthest from the Sun in July.When is the Earth moving the fastest in orbit?

A)Neither January nor July since the orbital speed of the Earth is a constant.

B)January

C)July

D)This occurs twice a year,in April and in October.

Q3) In order for a satellite to be geosynchronous,its orbit must:

A)go over the North and South Poles.

B)be over the equator.

C)be over a single longitude.

D)emit television signals.

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Page 9

Chapter 8: Rotational Equilibrium and Dynamics

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Sample Questions

Q1) If a nonzero torque is applied to an object,that object will experience:

A)a constant angular speed.

B)an angular acceleration.

C)a constant moment of inertia.

D)an increasing moment of inertia.

Q2) A 40-kg boy is standing on the edge of a stationary 30-kg circular platform that is free to rotate.The boy tries to walk around the platform in a counterclockwise direction.As he does:

A)the platform doesn't rotate.

B)the platform rotates in a clockwise direction just fast enough so that the boy remains stationary relative to the ground.

C)the platform rotates in a clockwise direction while the boy goes around in a counterclockwise direction relative to the ground.

D)both go around with equal angular velocities but in opposite directions.

Q3) What is the center of mass of each rod?

A)rod 1: (35.20 m,0),rod 2: (0,11.73 m)

B)rod 1: (17.60 m,0),rod 2: (0,16.50 m)

C)rod 1: (2.50,4.00),rod 2: (3.75 m,0 m)

D)rod 1: (10.20 m,0),rod 2: (0,9.70 m)

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Page 10

Chapter 9: Fluids and Solids

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Sample Questions

Q1) A fountain sends water to a height of 113 m.What must be the pressurization (above atmospheric)of the underground water system? (1 atm = 10⁵ N/m²)

A)1.0 atm

B)47.1 atm

C)12.1 atm

D)11.1 atm

E)0.115 atm

Q2) A large stone is resting on the bottom of the swimming pool.The normal force of the bottom of the pool on the stone is equal to the

A)weight of the stone.

B)weight of the water displaced.

C)sum of the weight of the stone and the weight of the displaced water.

D)difference between the weight of the stone and the weight of the displaced water.

Q3) In an elastic solid there is a direct proportionality between strain and A)elastic modulus.

B)temperature.

C)cross-sectional area.

D)stress.

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Page 11

Chapter 10: Thermal Physics

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Sample Questions

Q1) For an ideal gas of a given mass,if the pressure remains the same and the volume increases,

A)the average kinetic energy of the molecules decreases.

B)the average kinetic energy of the molecules stays the same.

C)the average kinetic energy of the molecules increases.

D)Nothing can be determined about the molecular kinetic energy.

Q2) The length of a 25-m wire increases by 0.25 cm when it is heated from 20°C to 90°C.What is the coefficient of linear expansion of the wire?

A)1.43 × 10^-6/ºC

B)1.43 × 10^-4/ºC

C)8.93 × 10^-4/ºC

D)8.93 × 10^-2/ºC

Q3) What is the temperature of a system in thermal equilibrium with another system made up of water and steam at one atmosphere of pressure?

A)0°F

B)273 K

C)0 K

D)100°C

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Page 12

Chapter 11: Energy in Thermal Processes

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Sample Questions

Q1) How much heat energy is required to vaporize a 4.40-g ice cube at 0°C? The heat of fusion of ice is 80.0 cal/g.The heat of vaporization of water is 540 cal/g,and c_water = 1.00 cal/g °C.

A)2 730 cal

B)3 170 cal

C)2 820 cal

D)3 520 cal

E)2 380 cal

Q2) I take 2.0 kg of ice and dump it into 2.3 kg of water and,when equilibrium is reached,I have 4.3 kg of ice at 0°C.The water was originally at 0°C.The specific heat of water = 1.00 kcal/kg °C,the specific heat of ice = 0.500 kcal/kg °C,and the latent heat of fusion of water is 80.0 kcal/kg.The original temperature of the ice was

A)one or two degrees below 0°C.

B)-46.0°C.

C)-184°C.

D)184°C.

E)The whole experiment is impossible.

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Page 13

Chapter 12: The Laws of Thermodynamics

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Sample Questions

Q1) The surface of the Sun is at approximately 5 700 K and the temperature of the Earth's surface is about 290 K.What total entropy change occurs when 1 175 J of heat energy is transferred from the Sun to the Earth?

A)4.05 J/K

B)3.85 J/K

C)0.206 J/K

D)4.26 J/K

E)6.05 J/K

Q2) At the dice factory,sets of novelty dice are created where a side with 7 dots replaces the single dot side.The sides then range from 2 to 7 instead of the usually 1 to 6.Using such dice for a game of craps,what will be the most probable roll?

A)7,this change in dots results in the same most probable value.

B)7.5

C)8

D)9

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14

Chapter 13: Vibrations and Waves

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Sample Questions

Q1) If the frequency of a traveling wave train is increased by a factor of three in a medium where the speed is constant,which of the following is the result?

A)amplitude is one third as big

B)amplitude is tripled

C)wavelength is one third as big

D)wavelength is tripled

Q2) By what factor should the length of a simple pendulum be changed if the period of vibration were to be increased by a factor of three?

A)1/3²

B)1/3

C)3

D)3²

E)1

Q3) The wavelength of a traveling wave can be calculated if one knows the: A)frequency.

B)speed and amplitude.

C)amplitude and frequency.

D)frequency and speed.

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15

Chapter 14: Sound

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Sample Questions

Q1) The Doppler shift of ultrasonic waves can measure the speed of blood in an artery.If the frequency of the stationary source is 95.0 kHz and the reflected sound has a Doppler shift of 210 Hz,what is the blood flow speed? (The speed of sound inside the body is 1 500 m/s. )

A)1.0 m/s

B)1.7 m/s

C)3.3 m/s

D)3.9 m/s

E)6.5 m/s

Q2) A series of ocean waves,7.0 m between crests,move past at 4.0 waves/s.Find their speed.

A)1.8 m/s

B)7.0 m/s

C)11.0 m/s

D)28 m/s

E)3.0 m/s

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16

Chapter 15: Electric Forces and Fields

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Q1) Charge A has 10 electric field lines coming out,Charge B has 20 lines coming out,and Charge C has 30 lines coming in.Which pair of these charges will have the largest force between them if placed one cm apart?

A)A and B

B)B and C

C)C and A

D)More information is needed.

Q2) A charge Q accumulates on the hollow metallic dome,of radius R,of a Van de Graaff generator.A probe measures the electric field strength at various points outside the sphere surface.If the probe is initially at a distance 2R from the sphere's center and then is moved to 3R,by what factor will the electric field reading change?

A)(3/2)²

B)3/2

C)2/3

D)(2/3)²

E)1

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Chapter 16: Electrical Energy and Capacitance

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Sample Questions

Q1) Increasing the voltage across the two plates of a capacitor will produce what effect on the capacitor?

A)increase charge

B)decrease charge

C)increase capacitance

D)decrease capacitance

Q2) In which case does an electric field do positive work on a charged particle?

A)A negative charge moves opposite to the direction of the electric field.

B)A positive charge is moved to a point of higher potential energy.

C)A positive charge completes one circular path around a stationary positive charge.

D)A positive charge completes one elliptical path around a stationary positive charge.

Q3) A 20- F capacitor is attached across a 1 000-V power supply.What is the net charge on the capacitor?

A)10 mC

B)20 mC

C)40 mC

D)none of the above

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18

Chapter 17: Current and Resistance

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Q1) The size of the electric current in an electrical conductor is a function of which of the following?

A)velocity of charge carriers

B)conductor cross-sectional area

C)density of charge carriers

D)All of the above choices are valid.

Q2) A steam turbine at an electric power plant delivers 4 500 kW of power to an electrical generator which converts 94% of this mechanical energy into electrical energy.What is the current delivered by the generator if it delivers at 3 500 V?

A)7.3E+2 A

B)1.4E+3 A

C)1.2E+3 A

D)1.1E+3 A

E)8.3E+2 A

Q3) The quantity volt is equivalent to which of the following?

A)J m

B)J C

C)C/ D)J/C

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Chapter 18: Direct-Current Circuits

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Q1) Two resistors of values 7.0 and 15.0 are connected in parallel.This combination in turn is hooked in series with a 3.8- resistor and a 22.3-V battery.What is the current in the 3.8resistor?

A)21 A

B)2.6 A

C)0.86 A

D)5.9 A

E)190 A

Q2) An uncharged,series RC circuit is connected across a battery.For which situation will the time for the capacitor to reach 90% of its final charge remain unchanged?

A)The RC time constant is doubled.

B)The battery voltage is doubled.

C)A second resistor is added in series with the original resistor.

D)All of these situations result in the time for the capacitor to reach 90% of its final charge to change.

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20

Chapter 19: Magnetism

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Q1) Three identical bar magnets,each 2 cm long,are placed in a straight line on a frictionless surface with their ends equally spaced with 2 cm between ends.They are constrained so they cannot rotate,but they can slide along the straight line.The left magnet has its north pole nearest the north pole of the middle magnet,and the right magnet has its south pole toward the middle magnet's south pole.Once they are in place and released from rest,which of the following best describes the motion of the magnets?

A)The end magnets will move away from the center magnet.

B)The magnets will not move since they are equally spaced.

C)The magnets will snap together.

D)None of the above would happen.

Q2) Magnetism had been a known phenomenon for some time before its relation to electric currents was found.That a current in a wire produces a magnetic field was discovered by:

A)Maxwell.

B)Ampere.

C)Oersted.

D)Tesla.

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Chapter 20: Induced Voltages and Inductance

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Q1) A straight wire of length l is oriented east-west and is in a magnetic field B pointing north.The wire is moving downward at a constant speed v.If the resistance of the rod is R,what is the current through the rod?

A)R/Blv

B)Blv/R

C)B²l²v²/R² D)not given

Q2) A 41-turn square coil of area 0.074 m² and a 123-turn circular coil are both placed perpendicular to the same changing magnetic field.The voltage induced in each of the coils is the same.What is the area of the circular coil?

A)0.22 m²

B)0.82 m²

C)0.025 m²

D)0.074 m²

E)0.67 m²

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22

Chapter 21: Alternating-Current Circuits and Electromagnetic Waves

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Q1) An FM radio tuning circuit has a coil with an inductance of 0.0036 mH.What is the value of the capacitance if the set is tuned to 91.3 MHz?

A)3.38E-12 F

B)2.65E-12 F

C)4.84E-13 F

D)8.45E-13 F

E)8.33E-12 F

Q2) Maxwell developed his theory of electromagnetism by combining previous discoveries.He added his own original hypothesis that:

A)electric charges produce electric fields.

B)moving electric charges produce magnetic fields.

C)changing electric fields produce magnetic fields.

D)changing magnetic fields produce electric fields.

Q3) In the typical household AC voltage of 311 V,what is the peak voltage?

A)622 V

B)440 V

C)311 V

D)220 V

E)156 V

Page 23

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Chapter 22: Reflection and Refraction of Light

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Q1) A rainbow is a result of:

A)different color droplets of water.

B)dispersion.

C)interference.

D)the Huygens Effect.

Q2) Three flat layers of transparent material are stacked upon one another.The top layer has index of refraction n₁,the middle n₂ and the bottom one n₃.If n₁ > n₂ > n₃,and a ray of light in air strikes the top layer,at which surface given can total internal reflection occur first?

A)the top surface

B)the surface between materials with indices n₁ and n₂

C)the surface between materials with indices n₂ and n₃

D)Total internal reflection cannot occur at any of these surfaces.

Q3) Which of the following describes what will happen to a light ray incident on an air-to-glass boundary at less than the critical angle?

A)total reflection

B)total transmission

C)partial reflection,partial transmission

D)partial reflection,total transmission

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Page 24

Chapter 23: Mirrors and Lenses

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Q1) Two plane mirrors make an angle of 50° with one another.A ray of light parallel to mirror #1 reflects off mirror #2 and then strikes mirror #1.What is the angle of incidence the ray makes with mirror #1?

A)50°

B)The answer is not given.

C)40°

D)55°

Q2) A goldfish is swimming in water (n = 1.33)inside a spherical plastic bowl of index of refraction 1.33.If the goldfish is 10.4 cm from the front wall of the 26.4-cm radius bowl,where does the goldfish appear to an observer in front of the bowl?

A)7.12 cm behind the plastic

B)15.9 cm behind the plastic

C)12.2 cm behind the plastic

D)8.67 cm behind the plastic

E)12.2 cm behind the plastic.

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Chapter 24: Wave Optics

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Q1) In the straight-ahead direction ( = 0°)in Fraunhofer diffraction,which of the following is observed on the screen?

A)a minimum equal in width to the adjacent minima

B)a minimum double in width to the adjacent minima

C)a maximum equal in width to the adjacent maxima

D)a maximum double in width to the adjacent maxima

Q2) When light shines on a lens placed on a flat piece of glass,interference occurs which causes circular fringes called Newton's rings.The two beams that are interfering come:

A)from the top and bottom surface of the lens.

B)from the top surface of the lens and the top surface of the piece of glass.

C)from the bottom surface of the lens and the top surface of the piece of glass.

D)from the top and bottom surface of the flat piece of glass.

Q3) Upon reflection,light undergoes a 180° phase change:

A)always.

B)if the incident medium has the higher index of refraction.

C)if the incident medium has the lower index of refraction.

D)whenever the incident angle is less than the critical angle.

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26

Chapter 25: Optical Instruments

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Q1) Tripling the aperture diameter of a camera lens will change the light intensity admitted to the film by what factor?

A)0.11

B)0.33

C)3.0

D)9.0

E)12.0

Q2) A camera is used to photograph the full moon,which has an angular diameter of 0.53°.The image on the film is 2.3 mm in diameter.What is the focal length of the lens?

A)2.3 mm

B)500 mm

C)250 mm

D)790 mm

E)25.5 mm

Q3) The Michelson interferometer is a device that may be used to measure A)magnifying power of lenses.

B)light wavelength.

C)atomic masses.

D)electron charge.

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Chapter 26: Relativity

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Q1) A boxcar without a front or a back is moving toward the right.Two electrons move through the boxcar,one moving from back to front toward the right,the other moving from front to back toward the left.According to me,each electron is moving with a speed of 0.8c,and the boxcar is moving with a speed of 0.6c.A passenger in the boxcar records how long it takes each electron to pass from one end of the boxcar to the other end.According to the passenger,which took longer?

A)the electron going from back to front

B)the electron going from front to back

C)They both took the same time.

D)Since nothing can go faster than light,an electron cannot move toward the left with a speed of 0.8c through a boxcar moving toward the right with a speed of 0.6c.

Q2) A proton with mass 1.67 × 10 ²⁷ kg moves in an accelerator with speed of 0.690c.What is its kinetic energy? (c = 3.00 × 10⁸ m/s)

A)1.50E-10 J

B)5.74E-11 J

C)2.08E-10 J

D)3.58E-11 J

E)1.09E-10 J

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Page 28

Chapter 27: Quantum Physics

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Q1) The wave function as derived in Schrödinger's equation is best described as being a measure of which of the following?

A)photon beam frequency

B)photon wavelength

C)particle wavelength

D)probability

Q2) Rosalind Franklin was

A)the maiden name of the wife of a president.

B)the producer of the x-ray diffraction photographs that led to the DNA structure.

C)the person who discovered that salt forms a crystal.

D)the discoverer of x-rays.

Q3) The ultraviolet catastrophe predicts that:

A)all objects should radiate extreme amounts of ultraviolet light.

B)as an object gets hotter its light will change from dull red to blue white.

C)a black body can absorb an infinite amount of radiation if the radiation is in the ultraviolet region.

D)the radiated energy approaches zero as the wavelength approaches zero.

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Chapter 28: Atomic Physics

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73 Verified Questions

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Sample Questions

Q1) What is the maximum number of electrons that can occupy a 3d subshell?

A)5

B)14

C)10

D)18

Q2) The Paschen series of hydrogen corresponds to electron transitions from higher levels to n = 3.What is the shortest wavelength in that series? (R = 1.097 × 10⁷ m ¹ and 1 nm = 10 ⁹ m)

A)1875 nm

B)820 nm

C)1580 nm

D)656 nm

E)1094 nm

Q3) Characteristic K x-rays are the result of:

A)inner electron transitions.

B)outer electron transitions.

C)nuclear electron states.

D)buckytubes.

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Chapter 29: Nuclear Physics

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Sample Questions

Q1) Tritium has a half-life of 12.3 years.How many years will elapse when the radioactivity of a tritium sample diminishes to 35% of its original value?

A)1.2E-1 years

B)1.9E+1 years

C)4.3E+0 years

D)6.3E+1 years

E)8.1E+0 years

Q2) Approximately how many radioactive atoms are present in a tritium sample with an activity of 0.20 × 10 ⁶ Ci and a half-life of 12.3 years? (1 Ci = 3.7 × 10¹⁰ decays/s)

A)1.3E+5

B)1.1E+2

C)3.5E-6

D)4.1E+12

E)2.9E+12

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Chapter 30: Nuclear Energy and Elementary Particles

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Sample Questions

Q1) If a negative muon decays to form an electron-antineutrino pair and one other particle,the other particle may be a(n)

A)positron.

B)antineutrino.

C)mu neutrino.

D)electron.

Q2) According to the standard model,a quark and its antiquark may have the same A)spin.

B)baryon number.

C)charge.

D)All of the above may be the same.

Q3) What is the particle referred to as a WIMP?

A)the result of a neutrino oscillation

B)a hypothetical particle left over from the Big Bang

C)a hypothetical particle in the MOND theory

D)none of the above

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