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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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- Two bodies of masses m₁ and m₂ are initially at rest at infinite distance apart
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Topics: Radioactivity
(83)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- Two bodies of masses m₁ and m₂ are initially at rest at infinite distance apart
- A body of mass 10 kg is moving on an inclined plane of inclination 30°with an acceleration
- 64 identical spheres of charge q and capacitance C each are combined to form a large
- A conductor of length 5 cm is moved parallel to itself with a speed of 2 m/s,
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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