A beam of plane polarised light of large cross sectional area and uniform intensity of 
falls normally on a polariser (cross sectional area 
) which rotates about its axis with an angular speed of 
. The energy of light passing through the polariser per revolution, is close to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Intensity, 
Area, 
Angular speed, 
, in one time period
Average energy 
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