The momentum of a photon of energy 1 MeV in kg m/s will be

The momentum of a photon of energy 1 MeV in kg m/s will be

Options

(a) 5 x 10⁻²²
(b) 0.33 x 10⁶
(c) 7 x10⁻²⁴
(d) 10⁻²²

Correct Answer:

5 x 10⁻²²

Explanation:

Energy of photon E = 1 MeV

Momentum of photon p = E / c

p = E / c = (1 × 10⁶ × 1.6 × 10⁻¹⁹J) / 3 × 10⁸ ms⁻¹

= 0.53 × 10⁻²¹ = 5 × 10⁻²² kg m/s.

admin:

Related Questions

  1. A layer of colourless oil spreads on water surface. White light is incident on it
  2. A charged particle of mass m and charge q moves along a circular path of radius
  3. A small angled prism of refractive index 1.4 is combined with another small angled prism
  4. Which of the following transitions will have highest emission wavelength?
  5. An experiment takes 10 minutes to raise temperature of water from 0⁰C to 100⁰C