Laser – 1 – 1

1. Laser is short form of :

(a) Light absorption stimulated emission radiation
(b) Light absorption by stimulated emission of radiation
(c) Light amplification stimulated emission radiation
(d) Light amplification by stimulated emission of radiation

ANSWER

EXPLANATION

2. The basic principle of the LASER is :

(a) Stimulated absorption 
(b) Stimulated emission 
(c) Spontaneous absorption 
(d) Spontaneous emission

ANSWER

EXPLANATION

3. In the following given which is not property of the laser :

(a) Intensity
(b) Directional
(c) Coherence
(d) Non-coherent

ANSWER

EXPLANATION

4. Light emitted by ordinary source of light is :

(a) Coherent
(b) Non-coherent
(c) Monochromatic
(d) None of these

ANSWER

EXPLANATION

5. The stimulated emission is dominant over stimulated absorption by the process is called _______ .

(a) Nuclear Energy 
(b) Optical Pumping 
(c) Population Inversion 
(d) None of these

ANSWER

EXPLANATION

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