SSC MTS EXAM

Detailed explanation-1: -The photoelectric emission occurs only when the incident light has more than a certain minimum frequency. This minimum frequency is called threshold frequency.

Detailed explanation-2: –Physics. The minimum frequency for photoelectric effect on metal is 7 × 1014 Hz, Find the work function of the metal.

Detailed explanation-3: -The photoelectric effect is only observed above a minimum frequency, known as threshold frequency, fo. Below this, no photoelectrons are ejected. This is because each photon needs a minimum amount of energy to release a photoelectron from the metal.

Detailed explanation-4: -The photoelectric effect occurs when green light strikes the metallic surface and photoelectrons are emitted. The photoelectric effect also occurs when blue light strikes the metallic surface. However, the kinetic energies of the emitted photoelectrons are much higher for blue light than for green light.