An initially parallel cylindrical light beam travels in a medium whose refractive index depends on intensity as μ(I)=μ₀+μ₂I, where μ₀ and μ₂ are positive constants. The beam intensity decreases with increasing radius.
Sub-question 1
The initial shape of the wave front of the beam is:-
Options
Sub-question 2
The speed of the light in the medium is:
Options
Sub-question 3
As the beam enters the medium, it will:
Options