Directions: are based on the following paragraph. |
An initially parallel cylindrical beam travels in a medium of refractive index \[\mu (I)={{\mu }_{0}}+{{\mu }_{2}}I,\]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. |
As the beam enters the medium, it will - [AIEEE 2010] |
A) travel as a cylindrical beam
B) diverge
C) converge
D) diverge near the axis and converge near the periphery
Correct Answer: A
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