When a metallic surface is illuminated with radiation of wavelength λ the stopping potential is V. If the same surface is illuminated with radiation of wavelength 
, the stopping potential is 
. The threshold wavelength for the metallic surface is:
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
According to Einstein's photoelectric equations,
As per question, 
From equations (i) and (ii), we get
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