NEET Physics Question - Modern Physics - Photoelectric Effects and deBroglie Equation

Assertion (A): Photoelectrons have a range of kinetic energy.

Reason (R): The work function varies as a function of depth from the surface.

Both (A) & (R) are true and the (R) is the correct explanation of the (A)

Both (A) & (R) are true but the (R) is not the correct explanation of the (A)

(A) is true but (R) is false

Both (A) and (R) are false

Solution:

Photoelectrons exhibit a range of kinetic energies because electrons lose varying amounts of energy while escaping the material. The work function (\phi\) is a constant for a given surface and does not vary with depth. Thus, assertion (A) is true, but reason (R) is false.

Rankers Physics

Photoelectron Kinetic Energy Range and Work Function

Solution:

Leave a Reply Cancel reply