Question

When an ultraviolet light is incident on a photocell, its stopping potential is vo and the maximum kinetic energy of the photoelectrons is Kmax . When X - rays are incident on the same cell, then 1) Vo and Kmax both increase 2) Vo and Kmax both decrease 3) vo increase but Kmax remains the same. 4) Kmax increase but Vo remains the same.

Answer 1

Answer:

Explanation:

As we know that frequency of x ray is greater than uv

and KE = hv - Ф

Greater the value of frequency, greater is the KE and Stopping potential