A light wave described by 
(in SI units) falls on a metal surface of work function 2.8 eV . The maximum kinetic energy of ejected photoelectron is (approximately) 
eV. ( 
. s. and 
)
Text Solution
Verified by ExpertsThe correct answer is:
C
Light contains two frequencies: 
and 
For maximum KE, use higher frequency 
.
Energy: 
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