Question 50
Modern PhysicsWhich of the following phenomena is called photoelectric effect?
- A.High energy electrons impinge on a metalic anode which then emits photons
- B.A high energy photon emits photons as it is slowed down
- C.A metal absorbs quanta of light and then emits electrons
- D.Two electrons are created from a quantum of light.
Show the answer and explanation
Answer: C (A metal absorbs quanta of light and then emits electrons)
Explanation
In the photoelectric effect a metal surface absorbs photons of light and gives out electrons. Option A describes X-ray production.