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Time taken by the sunlight to pass throu...

Time taken by the sunlight to pass through a window made of glass of 5 mm thickness is __________ s.`(mu_("glass")=1.5)`

A

`2.5 xx 10^(-11)`

B

`0.4 xx 10^(-8)`

C

`4 xx 10^(-8)`

D

` 2.5 xx 10^(-5)`

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The correct Answer is:
A
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