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Monochromatic light of frequency 6.0 ×1014 Hz is produced by a laser. The power emitted is 2.0 ×10–3 W. How many photons per second, on an average, are emitted by the

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Monochromatic light of frequency 6.0 ×1014 Hz is produced by a laser. The power emitted is 2.0 ×10–3 W.
How many photons per second, on an average, are emitted by the source?

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