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What should be the minimum distance between source and reflector in water so that echo is heard distinctly?(The speed of sound in water = 1400 m s-1) - Physics

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प्रश्न

What should be the minimum distance between source and reflector in water so that echo is heard distinctly?
(The speed of sound in water = 1400 m s-1)

संख्यात्मक
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उत्तर

t = 0.1 sec,

v = 1400 m/s

t = `(2d)/v`

Or d = `(tv)/2`

= `(0.1 xx 1400)/2`

= 70 m

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अध्याय 7: Sound - EXERCISE - 7 (A) [पृष्ठ १५५]

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सेलिना Physics [English] Class 10 ICSE
अध्याय 7 Sound
EXERCISE - 7 (A) | Q 3. | पृष्ठ १५५
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