Sounds waves and Motion MCQ question and answer with solution

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Each section contains 100 MCQs on Sounds waves and Motion .

Why are we able to hear short wave broadcasts better than long wave broadcasts?

A) Short waves are more energetic than long waves B) Short waves are unaffected by atmospheric disturbances C) Short waves broadcasts are made by nearby radio stations D) By convention, short waves are meant for long distances, whereas long waves are reserved for short distances

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The depth of the trough of a wave is called its-

A) The frequency B) Displacement C) Velocity D) Amplitude

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

What are the roofs and walls of the auditorium covered to reduce echo?

A) metal B) fiberboard C) rubber D) plastic

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is the frequency of ultrasonic waves?

A) 20 Hertz to 20 kHertz B) Less than 20 Hertz C) More than 20 kHertz D) No bandwidth defined

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

To hear distinct echo the time interval between the original sound and the reflected sound must be-

A) 1 second B) 0. 1 second C) 0.02 second D) 2 seconds

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

The maximum distance of the particle from the fixed point or mean position is called

A) amplitude B) frequency C) wavelength D) time period

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

TV remote control uses

A) Infrared frequency B) Radio frequency C) Visible frequency D) Ultraviolet frequency

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

When the sound passes through the air, the particles of air-

A) Vibrate in the direction of propagation of the waves B) Don't vibrate C) Vibrate but not in a certain direction D) The waves vibrate perpendicular to the direction of propagation

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Through which of the following mediums can sound not travel?

A) Steel B) Vacuum C) Air D) Milk

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

What is the lowest frequency of sound that can be heard by human beings?

A) 50 Hz B) 500 Hz C) 10 Hz D) 20 Hz

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

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Sounds waves and Motion MCQ question and answer with solution | Physics Gk MCQs