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An echo is returned in 3 s. What is the ...

An echo is returned in `3 s`. What is the distance of the reflecting surface from the source, given that the speed of sound is `342 m//s`.

A

351 m

B

513 m

C

153

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
`d = ( v xx t)/(2) = (342("m s"^(-1) ) xx 3" s")/(2) = 513" m"`
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MTG IIT JEE FOUNDATION-SOUND-Exercise (Multiple Choice Questions) LEVEL - 1
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  14. The highest frequency produced by a man is 1700 Hz and that of a woma...

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  15. The wavelength and frequency of a sound wave in medium A is 20 cm and ...

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  16. A man stands between two cliffs and fires a gun. He hears two successi...

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  17. Water waves are

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  18. An echo repeats two syllables. If the velocity of sound is 330"m s"^(-...

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  20. If you go on increasing the stretching force on a wire in a guitar, it...

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