List of top Geophysics Questions on Lasers asked in CUET (PG)

Match List-I with List-II 

List-IConcept / DeviceList-IIDescription
AOptical PumpingIIPopulation Inversion
BHe-Ne LaserIFour Level Laser
CRuby LaserIIIThree Level Laser
DOptical ResonatorIVPair of optically plane parallel mirrors
Which of the following is not a characteristic of a laser light?
In order to produce LASER, the correct sequence of processes given below will be
(A) Pumping
(B) Population inversion
(C) Stimulated emission
(D) Light Amplification
Choose the correct answer from the options given below: