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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
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
- Infinite number of masses, each 1 kg, are placed along the x-axis
- The acceleration due to gravity becomes (g/2) where g=acceleration due to gravity
- In the middle of the depletion layer of a reverse-biased P-N junction, the
- A ball is dropped from the root of a tower of height h
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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