NCERT Class VIII Science Solutions: Chapter 13-Sound Part 1
Download PDF of This Page (Size: 240K) ↧
MULTIPLE CHOICE QUESTIONS
Question 1:
A list of mediums is given below.
-
Wood
-
Water
-
Air
-
Vacuum
In which of these mediums can sound travel?
-
i & ii only
-
i, ii & iii only
-
iii & iv only
-
ii, iii & iv only
Answer: B
Question 2:
The loudness of sound depends on:
-
Its amplitude.
-
Its frequency.
-
Its time period.
-
Its speed.
Answer: A

Amplitude and Loudness
Image result for loudness of sound depends on
Question 3:
Which of the following statements are correct?
-
Sound is produced by vibrations.
-
Sound requires a medium for propagation.
-
Light and sound both require a medium for propagation.
-
Sound travels slower than light.
-
i & ii only
-
i, ii & iii only
-
ii, iii & iv only
-
i, ii & iv only
Answer: D
Question 4:
An object is vibrating at 50 hertz. What is its time period?
Answer: A
Question 5:
In order to reduce the loudness of a sound we have to
-
Decrease its frequency of vibration of the sound.
-
Increase its frequency of vibration of the sound.
-
Decrease its amplitude of vibration of the sound.
-
Increase its amplitude of vibration of the sound.
Answer: C
Question 6:
Loudness of sound is measured in units of
Answer: A