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PhysicsNEET 2021Photoelectric effect and Einstein's equation

Dual Nature of Radiation and Matter

The number of photons per second, on an average, emitted by a source of monochromatic light of wavelength 600 nm, when it delivers a power of watt, will be ( J s):

  1. A.
  2. B.
  3. C.
  4. D.

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