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NEET2005PhysicsDual Nature of MatterActual

The work functions for metal a , b and c are respectively 1.92 eV , 2.0 eV and 5 eV. According to Einstein's equation the metals which will emit photoelectrons for a radiation of wavelength 4100 Å is a/are:

Options

  1. Anone
  2. B'a' only
  3. C'a' and 'b' only
  4. Dall the three metals

Correct answer

C. 'a' and 'b' only

Step-by-step solution

Energy of photon = 12400 4100 =3 eV

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