Time taken by the sunlight to pass through a window of thickness 4mm whose refractive index is 1.5,is? (Assuming sunlight falls perpendicularly on the window)
tezzzz30:
have u posted this problem from akash institude anthe sampli paper
Yes
see my solution
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Refractive index affects the velocity of light here sunlight and the given refractive index is 1.5 then the velocity comes to
3*10^8/1.5 = 2*10^8 m/s
Now the given thickness is 4mm which is 0.004 m
Now the = 0.004/2*10^8
= 0.002*10-8 secs
3*10^8/1.5 = 2*10^8 m/s
Now the given thickness is 4mm which is 0.004 m
Now the = 0.004/2*10^8
= 0.002*10-8 secs
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