When the energy of the incident radiation is increased by 
, the kinetic energy of the photoelectrons emitted from a metal surface increased from 0.5 eV to 0.8 eV. The work function of the metal is
Text Solution
Verified by ExpertsThe correct answer is:
B
From Einstein's photoelectric equation,
For first condition, 
……… (i)
For second condition,
……… .(ii)
From Eqs. (i) and (ii), we get
From Eq. (i), 
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