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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 compound slab consisting of two different materials having equal thickness
- A coil has resistance 30 ohm and inductive reactance 20 ohmn at 50 Hz frequency.
- Periodic time of a satellite revolving above Earth’s surface at a height equal to R,
- Ionization potential of hydrogen atom is 13.6 eV. Hydrogen atoms in the ground state
- Copper and carbon wires are connected in series and the combined resistor is kept
Topics: Radioactivity (83)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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