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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
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Consider a two particle system with particle having masses m₁ and m₂. If the first
- A layer of colourless oil spreads on water surface. White light is incident on it
- The magnetic susceptibility of a material of a rod is 299. Permeability of vacuum
- In an NPN transistor the collector current is 24 mA. If 80% of the electrons
- A current is flowing through resistance. A potential difference of 120 V
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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