Navigate

A radioactive nucleus of mass M emits a photon of frequency v and the nucleus recoils.

A radioactive nucleus of mass M emits a photon of frequency v and the nucleus recoils. The recoil energy will be

Options

(a) Mc² – hv
(b) h²v² / 2Mc²
(c) zero
(d) hv

Correct Answer:

h²v² / 2Mc²

Explanation:

Momentum Mu = E/c = hv / c
Recoil energy
1/2 Mu² = 1/2 . M²u² / M = 1/2M (hv/c)²
= h²v² / 2Mc²

AIPMT2011
admin:

Related Questions

  1. The power factor of an AC circuit having resistance R and inductance L connected
  2. Number of electrons in one mC charge, given e=1.6×10⁻¹⁹ C, will be
  3. The condition under which a microwave oven heats up a food item containing
  4. If in an experiment for determination of velocity of sound by resonance tube
  5. An electron in a circular orbit of radius 0.05 nm performs 10¹⁶ rev/s. The magnetic