Teaching UP PGT Mock Test Series 2024 Physics Atoms Lasers and Laser Light

If there are 'N' atoms in a source, each emitting light with intensity 'I', then the total intensity produced by an ordinary source is proportional to 'NI', whereas in a laser source, it is proportional to ________.

1
(NI)2
2
2NI
3
NI2
4
N2I
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