CBSE Class 8 Science Sound MCQs

Question: Noise pollution is harmful for

a) All

b) Human

c) Cat

d) Bird

Answer: A

Question: Sound propagates maximum in

a) Solid

b) Gas

c) Liquid

d) All

Answer: A

Question: Voice box or larynx of human process

a) Sound

b) Wind

c) Loudness

d) None of the options

Answer: A

Question: To an fro motion of an object is called

a) Vibration

b) Waves

c) Amplitude

d) All of these

Answer: A

Question: Sound is kind of

a) Energy

b) Work

c) Force

d) None of the options

Answer: A

Question: The pitch of sound depends on

a) Frequency

b) Amplitude

c) Frequency and amplitude

d) None of the options

Answer: A

Question: Large amplitude of sound vibrations will produce:

a) Loud sound

b) Meak sound

c) Slow sound

d) Sheark

Answer: A

Question: The voice box is called:

a) Larynx

b) Stomach

c) Heart

d) Mouth

Answer: A

Question: The hearing range of human ear is

a) 20 hz to 20,000 hz

b) Less than 20 hz

c) More than 20,000 hz

d) 20 hz to 25,000 hz

Answer: A

Question: Eardrum is a part of

a) Hearing organ

b) Sound producing organ

c) Skeletal system

d) Reproductive organ

Answer: A

Question. An Object Is Vibrating At 50 Hz. What Is Its Time Period?

(a) 0.02 s

(b) 2 s

(c) 0.2 s

(d) 20 s

Answer : A

Question. Consider The Following Statements And Choose The Correct One:

(a) The pitch of a sound depends on the frequency of vibration.

(b) If the frequency of vibration is low, the sound produced has a low pitch.

(c) If the frequency of vibration is high, the sound produced has a high pitch.

(d) All the above.

Answer : D

Question. The pitch of sound depends on

(a) frequency

(b) amplitude

(c) both of these

(d) none of these

Answer : A

Question. When the amplitude is small, the sound produced is:

(a) loud

(b) feeble

(c) low pitched

(d) none of these

Answer : B

Quesiton. Large amplitude of sound vibrations will produce:

(a) loud sound

(b) slow sound

(c) meak sound

(d) shreak

Answer : A

Question. Sound waves do not travel through

(a) solids

(b) gases

(c) liquids

(d) vacuum

Answer : D

Question. In sitar sound Is produced by:

(a) beating

(b) rubbing

(c) blowing

(d) plucking

Answer : A

Question. A shehnai produces sound from:

(a) vibrating strings

(b) vibrating membrane

(c) vibrating air column

(d) none of these

Answer : C

Question. Sound:

(a) can travel through vacuum

(b) cannot travel through vacuum

(c) sound can sometimes travel through

(d) none of these vacuum

Answer : B

Question. The Loudness Of Sound Is Determined By Its:

(a) Amplitude of vibration

(b) Ratio of amplitude and frequency of vibration

(c) Frequency of vibration

(d) Product of amplitude and frequency of vibration

Answer : A