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When ultraviolet rays are incident on a ...

When ultraviolet rays are incident on a photosensitive metal plate, photoemission is not possible. But it is possible by the incidence of

A

violet rays

B

infrared rays

C

X-rays

D

`alpha`- rays

Text Solution

Verified by Experts

The correct Answer is:
C
Consider VIBGYOR, for photoemission `(lambda lt lambda_("ultraviolet"))`
OR `v gt v_("ultraviolet")`. Thus it is X-rays.
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MARVEL PUBLICATION-ELECTRONS AND PHOTONS -TEST YOUR GRASP - 17
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