Question

On a photosensitive material, when frequency of incident radiation is increased by % kinetic energy of emitted photo electrons increases from to . The work function of the surface is :

A

B

C

D

Medium

Solution

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Correct option is B)

As per Einstein's Photoelectric equation:
K.E. =  
0.4 = --- (1)
0.9 = --- (2)
(2) - (1)
0.5 =
Putting this value in equation (1),

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Solution To Question ID 639578
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