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Questions  

For a photoelectric cell the graph showing the variation of cut off voltage (Vo) with frequency (v) of incident light is best represented by       

a
b
c
d

detailed solution

Correct option is D

According to Einstein’s equationh= W0 + Kmax⇒ This is the equation of straight line having positive slope (h/e) and intercept on -V0  axis, equals to

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