Monochromatic light of frequency 6.0 \times 10^{14} {\H} is produced by a laser. The power emitted is 2 \times 10^{-3} {\W}. The number of photons emitted, on the average, by the source per second is:-

AIPMT 2007 Physics and Chemistry Paper

Question : 40 of 100

Marks: +1, -0

Monochromatic light of frequency 6.0×1014H is produced by a laser. The power emitted is 2×10−3W. The number of photons emitted, on the average, by the source per second is:-

5×1014
5×1015
5×1016
5×1017

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