Question

In a photo electric experiment, the maximum velocity of photoelectrons emitted

• A. Depends on intensity of incident radiation
• B. Does not depend on cathode material
• C. Depends on frequency of incident radiation
• D. Does not depend on wavelength of incident radiation

Answer 1

Answer: (C)

Depends on frequency of incident radiation

$hv=h{v}_0+KE$
Kinetic energy of the photo electrons emitted depends on the frequency of incident light. More is frequency of incident light, more is the K.E. of emitted electron & therefore more is the velocity of emitted electrons.