An intially parallel cyclindrical 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 intensity of light beam. The intensity of the beam is decreasing with increasing radius. Answer the following questions : The speed of light in the medium isA. minimum on the axis of the beamB. the same everywhere in the beamC. directly proportional to the intensity lD. maximum on the axis of the beam

An intially parallel cyclindrical beam travels in a medium of refracti

1.	An intially parallel cyclindrical 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 intensity of light beam. The intensity of the beam is decreasing with increasing radius. Answer the following questions : The speed of light in the medium isA. minimum on the axis of the beamB. the same everywhere in the beamC. directly proportional to the intensity lD. maximum on the axis of the beam
Answer» Correct Answer - A

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