Question

According to Einstein's photoelectric equation,the graph between the kinetic energy of photo electrons ejected and the frequency of incident radiation is:

A
B
C
D
Medium

Solution

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Correct option is
C

According to Einstein's equation,
or
On comparing equation a with ; it is clear to say that this is the equation of straight line having positive slope (h) and negative intercept on KE axis.
The relationship between photoelectron K.E. and light frequency is as shown below:-
(Image)
The variation of cut-off potential with frequency of incident radiation is shoen above.
Correct option :-C

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