Question

Photoelectric effect can be caused by :

A) visible light but not by X – rays B) gamma rays but not by X – rays

C) ultraviolet light only D) Visible light, ultraviolet rays,X – rays and

gamma rays also​

Answer 1

Answer:The correct answer is Option D because the work function of metal is no

Answer 2

C). Photoelectric effect can be caused by ultraviolet rays only.

Photoelectric effect

• Tendency in which charged particles tend to release from or from inside when it absorbs electromagnetic radiations from the material.
• Such effects are usually defined as ejection of the electrons from metallic plate when it comes in contact with light.
• In wide view the radiated energy may be visible, infrared, gamma rays, X-rays, or ultraviolet rays. Such materials can be liquid, gas or solid also the particles which are released can be ions or electrons.

Therefore, photoelectric effect can be caused by ultraviolet light only.