MEDIUM
8th ICSE
IMPORTANT
Earn 100

The waveforms of some sounds are given below. Answer the questions that followed.
Question Image
Identify the most shrill sound.
 

Important Questions on Sound

MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Exercises>Q H
The waveforms of some sounds are given below. Answer the questions that followed.
Question Image
Identify the most soft sound.
HARD
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 1
If a key of a piano is first struck gently and then much harder, how will the loudness and pitch of the sound change?
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 2
A person hears two sounds one of 60 dB, 100 Hz and other of 45 dB, 700 Hz. Which sound will the person perceive to be louder?
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 3
If a stretched string is cut into half, how will the pitch of the sound produced by the vibrating string change?
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 4
Why is it advised not to use earphones at loud volumes?
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8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 5
The loudness of a sound depends on its amplitude. Give reason.
MEDIUM
8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 6
No two musical instruments can have the same timbre. Give reason.
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8th ICSE
IMPORTANT
Living Science Physics 8>Chapter 7 - Sound>Think and answer>Q 7
A monotone is unable to deliver the message imparted by the orator. Give reason?