afires a gun. He heard the echo of the s...

afires a gun. He heard the echo of the sounds from the first building after 2 seconds and echo i from the second building after 3 seconds. Find the distance between two buildings. (Speed of sound in air = `340 m/s`)

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A person standing between two hills fired a gun heard the first echo after 0.6s and the second echo after 1s. Find the distance between the two hills. (speed of sound in air =340m//s )

Solve the following example: A person standing between two hills fired a gun and heard the first echo after 0.5 s and the second echo after 0.9 s. Find the distance between two hills. (speed of sound in air =340 m//s )

A person standing before a cliff shouts and hears the echo after 1.9s. Find the distance between the person and the cliff. (speed of sound in air=340 m/s )

A soldier standing between two hills hears two echoes after firing the gun. The first echo is heard after 1.2s and the second echo after 2.4s. Find the separation between the two hills.(speed of sound in air = 340m//s )

Solve the following example: A person standing before a cliff shouts and hears the echo afte 1.6 s. Find the distance between the person and the cliff. (speed of sound in air= 340 m//s )

Nita heard the sound of lightning after 4 seconds of seeing it. What was the distance of the lightning from her? (The velocity of sound in air is 340 m//s )

Sunita saw the firecrackers and after 5 seconds, heard its bursting. At what distance from her the firecrackers were actually burnt? (The velocity of sound in air is 340 m/s?)

A man standing unsymmetrical position between two mountains and fires a gun. He hears the first echo after 1.5 s and the second echo after 2.5 s. If the speed of sound in air is 340 m/s , then the distance between the mountains will be

A man is standing between two parallel cliffs and fires a gun. If he hears first and second echoes after 1.2 s and 3.6 s respectively, the distance between the cliffs is (velocity of sound in air = 340 m s^(-1) )

A man shouts loudly close to a high wall. He hears an echo. If the man is at 40 m from the wall, how long after the shout will the echo be heard? (speed of sound in air = 330 m//s )

CHETANA PUBLICATION-Study of Sound-EXERCISE

afires a gun. He heard the echo of the sounds from the first building ...
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The unit of frequency is …………… .
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The normal hearing range for humans is ………… .
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Sound will not travel through ……….. .
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SI unit of …………..is Hertz (Hz).
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The velocity of sound is inversely proportional to the………… .
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Sound waves with frequency greater than 20 kHz are called……….. .
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The loudness of a sound depends upon ………… .
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…../… are used in sonography.
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The ……….receives the vibrations coming from the membrane and converts ...
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Sound will not travel through ……….. .
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SI unit of …………..is Hertz (Hz).
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The loudness of a sound depends upon ………… .
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…………are used in sonography.
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Match the columns:
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The intensity of reverberation is higher in a closed and empty house.
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Bats can navigate in dark.
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Sound travels faster in iron than in air.
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The roof of a movie theatre and a conference hall is curved. Why?
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The intensity of reverberation is higher in a closed and empty house.
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What is an echo? What factors are important to get a distinct echo?
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