If c is the velocity of light in free space, the time taken by light to travel a distance x in a medium refractive index `mu` is
If c is the velocity of light in free space, the time taken by light to travel a distance x in a medium refractive index `mu` is
A. `(x)/(c)`
B. `(mux)/(c)`
C. `(x)/(muc)`
D. `(c)/(mux)`
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Correct Answer - B
Velocity of light in a medium `v = c/mu`
We knows time taken `t = x/v`
`rArr r = (x)/(c//mu)`
`rArr t = (mux)/(c)`
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