JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Application +4 | -1

A medium bounded by the planes

x=0, x=a, y=b, y=-b, z=c

and

z=0

has refractive index

\mu(x, z)=A z^3-B x+2

. A ray of light travelling along positive

z

-axis enters the medium

B

at point

P\left(\frac{1}{B}, 0\right)

. Then the optical path introduced by the medium (when the light ray emerges out) will be:

View answer and explanation

Correct option: A

\frac{A c^4}{4}

Option A (

\frac{A c^4}{4}

) is correct because it represents the optical path length calculated by integrating the refractive index function along the z-axis.

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