EASY
9th CBSE
IMPORTANT
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Can we hear ultrasonic waves?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 31
What name is given to the sound waves of frequency too low for humans to hear?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 32
What name is given to the sound waves of frequency too high for humans to hear?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 33
What type of sound waves are produced by a vibrating simple pendulum?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 34
What happens to the pitch of a sound if its frequency increases?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 35
What happens to the loudness of a sound if its amplitude decreases?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 36
What name is given to sound waves of frequencies higher than 20 kHz?
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 37
An echo is simply a _____ (refraction/reflection) of sound.
EASY
9th CBSE
IMPORTANT
Science for Ninth Class Part 1 Physics>Chapter 5 - Sound>Very Short Answer Type Questions>Q 37

The pitch of a sound depends on _____.

(Choose from: amplitude/frequency)