If c is the velocity of light in free space, the time taken by light to travel

If C Is The Velocity Of Light In Free Space Physics QuestionIf C Is The Velocity Of Light In Free Space Physics Question

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 μ is

Options

(a) x/c
(b) μx/c
(c) x/μc
(d) c/μx

Correct Answer:

μx/c

Explanation:

Velocity of light in a medium v = c / μ
We known time taken t = x / v
⇒ t = x / (c/μ) = μx / c

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