Worksheetssound
Total questions: 10
Worksheet time: 5mins
A list of mediums is given below
(i) Wood (ii) Water
(iii) Air (iv) Vacuum
In which of these mediums can sound travel?
(a) (i) and (ii)
(b) (i), (ii) and (iii)
(c) (iii) and (iv)
(d) (ii), (iii) and (iv)
The loudness of sound depends on
(a) its amplitude
(b) its time period
(c) its frequency
(d) its speed
Which of the following statements are correct?
(i) Sound is produced by vibrations.
(ii)Sound requires a medium for propagation.
(iii)Light and sound both require a medium for propagation.
(iv)Sound travels slower than light.
(a) (i) and (ii))
(b) (i), (ii) and (iii)
(c) (ii), (iii) and (iv)
(d) (i), (ii) and (iv
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
order to reduce the loudness of a sound, we have to
(a) decrease its frequency of vibration of the sound
(b) increase its frequency of vibration of the sound
(
c) decrease its amplitude of vibration of the sound
(d) increase its amplitude of vibration of the sound
Loudness of sound is measured in units of
(a) decibel (dB)
(b) hertz (Hz)
(c) metre (m)
(d) metre/second(m/s)
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
1 Hz is equal to
(a) 1 vibration per minute
(b) 10 vibrations per minute
(c) 60 vibrations per minute
(d) 600 vibrations per minute
9 Pitch of sound is determined by its
(b) speed
(a) frequency
(c) amplitude (
d) loudness
Ultrasound has frequency of vibration
(a) between 20 and 20000 Hz
(b) below 20 Hz
(c) above 20000 Hz
(d) between 500 and 10000 Hz
