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Time taken by the sunlight to pass throu...

Time taken by the sunlight to pass through a slab of 4 cm and refractive index 1.5 is ...... s.

A

`2xx10^(-8)`

B

`2xx10^(-10)`

C

`2xx10^8`

D

`2xx10^(10)`

Text Solution

Verified by Experts

The correct Answer is:
A, B
`n=c/v" but "v=d/t`
`thereforen=(ct)/(d)`
`therefore t=(nd)/(c)=(1.5xx4xx10^(-2))/(3xx10^8)`
`therefore t =2xx10^(-10)` s
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