Surface of certain metal is first illuminated with light of wavelength 
and then, by light of wavelength 
It is found that the maximum speed of the photo electrons in the two cases differ by a factor of 
The work function of the metal (in 
) is close to: (Energy of photon 
)
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
(a ) From Einstein's photoelectric equation,
And 
As per question, maximum speed of photoelectrons in two cases differ by a factor 
From eqn. 
& 
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