Ultraviolet radiation of different frequencies v_(1) and v_(2) are incident on two photosensitive materials having work functions phi_(1) and phi_(2)(phi_(1) gtphi_(2)) respectively. The kinetic energy of the emitted electrons is same in both the cases. which one of the two radiations will be of higher frequency ?

Ultraviolet radiation of different frequencies v_(1) and v_(2) are inc

1.	Ultraviolet radiation of different frequencies v_(1) and v_(2) are incident on two photosensitive materials having work functions phi_(1) and phi_(2)(phi_(1) gtphi_(2)) respectively. The kinetic energy of the emitted electrons is same in both the cases. which one of the two radiations will be of higher frequency ?
Answer» Solution :As PER relation `hv=phi+(K.E.)_(max)` we find that `v_(1) gt v_(2)`.

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