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MHT CET Physics question

PhysicsDual Nature of Matter and RadiationMHT CET

Monochromatic light of frequency Hz is produced by a laser. The power emitted is W. The number of photons emitted on the average, by the source per second is

Answer: (A)

Solution

\dfrac{P}{hν}\dfrac{2×10^{-3}}{6.63×10^{-34}×6×10^{14}}$ ≈

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Question ID VK-083660