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Earn 100

What are the types of Sound on the Basis of Frequency of Sound ?

Important Questions on Sound

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Which of the following animal produce ultrasound?
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Although sound is produced due to repeated vibratory motion yet a vibrating pendulum does not produce sound? Why?
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What is infrasound? Name some animals communicating through the infrasound.
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A large drum produces a louder sound than a small drum. Give reasons.
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Explain how a bat catches its prey in the dark.
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Rupesh was studying for his exams. His neighbour Berry was playing tabla. Rupesh was getting disturbed. He asked Berry to play tabla softly. Berry followed his advice. Why is soft sound produced when we strike a drum softly?

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Name the sound waves used by bats while flying in the dark.
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Sounds of frequencies below 20 Hz are called ____________ sound.
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How can we know from a distance that a car is approaching us?
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How is loudness related to amplitude?
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Name two animals which can hear sounds with frequency beyond 20000 Hz.
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The loudness of a whisper is 20 dB. The sound of shouting is about 105 times louder than whisper. What is the loudness of shouting? 
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Give reasons for the following:

We cannot hear any sound on vibrating our hands forward and backwards.

 

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Which animal does not use the method of echolocation?
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The intensity of 60 dB sound corresponds to
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How is the loudness of a sound measured?
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A sound appears to be much louder inside a hall than in an open space. Give reasons.
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Cotyledons are also called-
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Which of these use the ultrasound range?
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The loudness of sound is measured in terms of