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KVPY2016PhysicsDual Nature of Matter

An electron and a photon have same wavelength of 10⁻⁹ ~m . If E is the energy of the photon and p is the momentum of the electron, the magnitude of E / p in SI units is

Options

  1. A1.00 10⁻⁹
  2. B1.50 10⁸
  3. C3.00 10⁸
  4. D1.20 10⁷

Correct answer

C. 3.00 10⁸

Step-by-step solution

Energy of photon = E = hc Momentum of photon = P = h E = PC E P = C =3 10⁸ ~m / s

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