Photoelectric EffectMedium
Question
When ultraviolet light is incident on a photocell, its stopping potential is V0 and the maximum kinetic energy of the photoelectrons is Kmax. When X-rays are incident on the same cell, then :
Options
A.V0 and Kmax both increase
B.V0 and Kmax both decrease
C.V0 increases but Kmax remains the same
D.Kmax increases but V0 remains the same
Solution
The energy of x−ray is more that of U.V. light. Hence, the K.E. of emitted photoelectron is more and hence stopping potential required is also more.
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