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KCET2011PhysicsDual Nature of Matter

The photoelectric threshold wavelength for silver is ₀ . The energy of the electron ejected from the surface of silver by an incident wavelength ( < ₀ ) will be

Options

  1. Ah c ( ₀- )
  2. Bh c ₀-
  3. Ch c ( ₀- ₀ )
  4. Dh c ( ₀- ₀ )

Correct answer

D. h c ( ₀- ₀ )

Step-by-step solution

aligned E &=W+ KE KE &=E-W &= h c - h c ₀ &=h c [ 1 - 1 ₀ ]=h c [ ₀- ₀ ] aligned

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