EASY
7th ICSE
IMPORTANT
Earn 100

The number of oscillations per second is called . (Amplitude/ Frequency)

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Important Questions on Sound

EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q II
Sound cannot travel in _____. (Vacuum/Water)
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q II
The time period of a pendulum which is vibrating at 10 Hz, is _____ . (10 s/ 0.1 s)
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q II
The loudness of sound depends on the _____ (Amplitude/Frequency) of vibrations.
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q III
The range of audible frequencies to man is 20 Hz to 20,000 Hz.
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q III
Vibrations with frequencies above 20,000 Hz are called infrasonic vibrations.
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q III
Sound travels faster in liquids than in air.
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q III
Reflected sound is called the pitch.
EASY
7th ICSE
IMPORTANT
Innovative Physics>Chapter 7 - Sound>EVALUATE YOUR UNDERSTANDING>Q III
Excess noise in the environment is useful for human beings.