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The time taken by the sunlight to reach...

The time taken by the sunlight to reach the bottom of a tank of depth 4.5 m filled completely with water is …………. Ns. The refractive index of water is `4/3`.

A

`2`

B

`20`

C

`1.5`

D

`200`

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The correct Answer is:
B
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TARGET PUBLICATION-WAVE THEORY OF LIGHT -COMPETITIVE THINKING
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