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in Physics by (87.1k points)
When a transparent parallel plate of uniform thickness `t` and refractive index `mu` is interposed normally in the path of a beam of light, the optical path is
A. increased by `mut`
B. decreased by `mut`
C. decreased by `(mu-1)t`
D. increased by `(mu-1)t`

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1 Answer

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by (84.5k points)
Correct Answer - D

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