When the energy of incident radiation is increased by 
, the kinetic energy of the photoelectrons emitted from a metal surface increased from 
to 
. The work function of the metal is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
According to Einstein's equation, We have, 
….(i)
where 
is work function
If energy photon is increased by 
, then
From eqs. (i) and (ii), we get
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