Answer to Question #141980 in Quantum Mechanics for Theodore

Question

(a) Distinguish between emission and absorption spectra
(b) Excitation and ionization energy .
(c) Define the following: (i) Thermionic emission, (ii) Photoelectric emission, (iii) Stopping potential

Answer 1

Solution

a) when electron goes higher to lower levels the this process generate emission spectra.

when electron goes lower to higher levels the this process generate absorption spectra.

b) energy required to electron to higher level is called excitation energy.

Energy required to ionize any matarial is called ionization energy.

C)

1) when any material is heated as well as it's electron start to emit from its surface is called thermionic emission.

2) when we falls photon of certain energy on surface of any metals then electron start to emit this is called photoelectric effect.

3) potential required to stop for electron on another terminal is called stopping potential.