Question

formula of time taken by light to travell in glass slab​

Answer 1

Answer:

Speed of light in vacuum=c

Refractive index μ is ratio of speed of light in vacuum to the speed of light in the given medium.

Thus μ=  c upon v

Thus speed of light in the glass slab=v=  c upon μ

Time taken by light to travel through thickness t=  

t upon v = c/μ t    =   μt upon c

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Explanation:

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Answer 2

Answer:

(refractive index =1.5)thickness u mm is (c=3×108 ms - 1 speed of light in free space

Explanation: