EASY
9th CBSE
IMPORTANT
Earn 100

The amplitude of a wave is a measure of its

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Important Questions on Sound

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 4
The distance between two successive rarefaction is called
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 5
The SI unit of frequency is 
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 6
Define the term 'time period' of a wave. Write its SI unit.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 7

Derive the relationship between wave velocity, frequency and wavelength.

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 8
If the period of small ripples on water is 0.1 s and their wavelength is 5 cm, what is the speed of the waves?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 9

A sound wave of frequency 640 Hz travels 800 m in 2.5 s. Calculate the

a. speed of sound and

b. wavelength of the sound wave.

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 1
Explain the term 'amplitude'. Write its SI unit.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Check Your Progress>Q 2
A tuning fork has a number 384 marked on it. What does this number signify?