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Free MCQs & Online Quiz Practice for Exams

Q: A transverse wave on a string has an amplitude A. A tiny spot on the string is colored red. As one cycle of the wave passes by what is the total distance traveled by the red spot?

A) A

B) 2A

C) 1/2A

D) 4A

Answer: D. 4A

Q: Which of the following does not affect the period of the mass-spring system?

A) Mass

B) Spring constant

C) Amplitude of vibration

D) All of the above affect the period

Answer: C. Amplitude of vibration

Q: An object of mass m oscillates on the end of a spring. To double the period replace the object with one of mass

A) 2m

B) m/2

C) 4m

D) m/4

Answer: C. 4m

Q: A car mounted on shock absorbers is like a mass on a spring. If we ignore damping how will the frequency of the oscillations change if passengers or a heavy load are added to the car?

A) Increase

B) Decrease

C) Stay the same

D) Be zero

Answer: C. Stay the same

Q: If the pendulum completes exactly 12 cycles in 2.0 min what is the frequency of the pendulum?

A) 0.10 Hz

B) 0.17 Hz

C) 6.0 Hz

D) 10 Hz

Answer: A. 0.10 Hz

Q: A certain pendulum has an iron bob. When the iron bob is replaced with a lead bob of the same size its time period will

A) Stay the same

B) Decrease

C) Increase

D) Be zero

Answer: A. Stay the same

Q: A wave transports

A) Energy but not matter

B) Matter but not energy

C) Both energy and matter

D) Air

Answer: A. Energy but not matter

Q: The bending of waves around the edges of an obstacle is

A) Reflection

B) Refraction

C) Diffraction

D) Damping

Answer: C. Diffraction

Q: The time period of a simple pendulum depends on?

A) Length of pendulum

B) Mass of bob

C) Amplitude of swing

D) All of the above

Answer: A. Length of pendulum

Q: A particle executing SHM has maximum velocity at?

A) Mean position

B) Extreme position

C) Quarter amplitude

D) Zero displacement

Answer: A. Mean position

Q: Frequency of a wave is the reciprocal of?

A) Time period

B) Wavelength

C) Amplitude

D) Speed

Answer: A. Time period

Q: Which wave can propagate in a vacuum?

A) Sound

B) Water

C) Light

D) Mechanical waves

Answer: C. Light

Q: The restoring force in a spring obeys which law?

A) Hooke's law

B) Newton's first law

C) Newton's second law

D) Pascal's law

Answer: A. Hooke's law

Q: If amplitude of SHM doubles maximum acceleration becomes?

A) Unchanged

B) Double

C) Quadruple

D) HALF

Answer: B. Double

Q: What type of wave is sound in air?

A) Transverse

B) Longitudinal

C) Surface

D) Electromagnetic

Answer: B. Longitudinal

Q: The unit of loudness of sound is?

A) Decibel

B) Hertz

C) Newton

D) Joule

Answer: A. Decibel

Q: Which property of sound determines its pitch?

A) Amplitude

B) Frequency

C) Wavelength

D) Speed

Answer: B. Frequency

Q: An echo is produced due to?

A) Reflection

B) Refraction

C) Diffraction

D) Interference

Answer: A. Reflection

Q: Sound travels fastest in which medium?

A) Air

B) Water

C) Steel

D) Vacuum

Answer: C. Steel

Q: Human audible range of sound is?

A) 0-20 Hz

B) 20-20000 Hz

C) 20-2000 Hz

D) Above 20 kHz

Answer: B. 20-20000 Hz