Question

A metal of work function 4eV is exposed
to a radiation of wavelength 140x10-'m. Then
the stopping potential developed by it
(h = 6.63x10-34Js and c= 3x108 m/s)
1) 6.42 V 2)2.94 V 3) 4.86V 4) 3.2 V​

Answer 1

Explanation:

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