Light of two different frequencies whose photons have energies 
and 
respectively, successively illuminate a metallic surface whose work function is 
. Ratio of maximum speeds of emitted electrons will be
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
According to Einstein's photoelectric equation, the maximum kinetic energy of emitted photoelectrons is
where 
is the energy of incident photon and 
is the work function.
But 
As per question
and 
Dividing eqn. (i) by eqn. (ii), we get
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