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NEET 2007 Physics question

PhysicsDual Nature of Matter and RadiationNEET 2007

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

Answer: (2)

Solution

Energy of one photon J. The power is the energy emitted per

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Question ID VK-089924