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The wavelengt...

Question

The wavelength of waves produced by a source is $50 c m$ . If wave velocity is $25 m s^{- 1}$ , what is the time required for one wave to generate?

A

$0.06 s$

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B

$0.04 s$

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C

$0.02 s$

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D

$0.03 s$

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Solution

The correct option is C
$0.02 s$

$F r e q u e n c y = \frac{v e l o c i t y}{w a v e l e n g t h} = \frac{25}{0.5} = 50 H z$
Time taken to complete one wave:
$= \frac{1}{f r e q u e n c y} = \frac{1}{50} = 0.02 s$

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