Light with an energy flux of 
falls on a non-reflecting surface at normal incidence. If the surface has an area of 
, the total momentum delivered (for complete absorption) during 30 min is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, energy flux 
Area, 
Time, 
Now, total energy falling on the surface in time t is,
Momentum of the incident light 
Momentum of the reflected light = 0
Momentum delivered to the surface
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