, hit a
screen. The number of photons hitting the screen by beam A is twice that by
beam B. Then what inference can you make about their frequencies?
i.e., Frequency of beam B is twice of beam A.
Answer:
Let 
=number of photons falling per
second of beam A and B respectively
Energy of falling photon of beam A = 
;
Energy
of falling photon of beam 
As
per question, intensity of A = intensity of B
i.e.,
Frequency of beam B is twice of beam A.
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