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Question

A beam of light of wavelength λ and with illumination L falls on a clean surface of sodium. If N photoelectrons are emitted each with kinetic energy E, then


  1. NL and EL

  2. NL and E1λ

  3. Nλ and EL

  4. N1λ and E1L


Solution

The correct option is B

NL and E1λ


Number of photons emitted is proportional to the intensity. Also hcλ=W0+E

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