Photoelectric emission is observed from a metallic surface for frequencies 
and 
of the incident light 
. If the maximum value of kinetic energy of the photoelectrons emitted in the two cases are in the ratio 
then the threshold frequency of the metallic surface is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Photoelectric equation, 
…… ..(i)
and 
…… ..(ii)
from eq (i) & (ii) we get
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