EASY
9th CBSE
IMPORTANT
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What type of sound waves are produced by a vibrating simple pendulum?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
What happens to the pitch of a sound if its frequency increases?
EASY
9th CBSE
IMPORTANT
What happens to the loudness of a sound if its amplitude decreases?
EASY
9th CBSE
IMPORTANT
What name is given to sound waves of frequencies higher than 20 kHz?
EASY
9th CBSE
IMPORTANT
An echo is simply a _____ (refraction/reflection) of sound.
EASY
9th CBSE
IMPORTANT

The pitch of a sound depends on _____.

(Choose from: amplitude/frequency)

EASY
9th CBSE
IMPORTANT
Loudness of sound depends on _____.
EASY
9th CBSE
IMPORTANT
Quality of sound depends on _____(only wavelength/ only amplitude/ waveform).
EASY
9th CBSE
IMPORTANT
Echoes are caused by the _____ of sound.