Question

Calculate the kinetic energy of a photoelectron emitted by a sodium surface when light of a wavelength 400nm is incident

Answer 1

Answer:

The energy of a body due to its motion is called kinetic energy.

KINETIC ENERGY = F × s

Answer 2

Explanation:

Magnetic force is always perpendicular to velocity, so that it does no work on the charged particle. The particle's kinetic energy and speed thus remain constant. The direction of motion is affected, but not the speed.