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Wave Optics question

2010 · Shift 0 · Q59

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JEE Main
Physics
Wave Optics
2010 · Shift 0 · Q59

Wave Optics question

2010 · Shift 0 · Q59

JEE MainPhysicsWave OpticsMCQ+4 / −1

An initially parallel cylindrical beam travels in a medium of refractive index

\mu \left( I \right) = {\mu _0} + {\mu _2}\,I,

where

{\mu _0}

and

{\mu _2}

are positive constants and

I

is the intensity of the light beam. The intensity of the beam is decreasing with increasing radius. The initial shape of the wavefront of the beam is

A
convex
B
concave
C
convex near the axis and concave near the periphery
D
planar

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