Question:
Nucleus emits \(\alpha\)-particle. Find recoil speed of daughter nucleus.
Nucleus emits \(\alpha\)-particle. Find recoil speed of daughter nucleus.
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Recoil velocity inversely proportional to remaining mass.
Updated On: Apr 23, 2026
- \(2v/(A+4)\)
- \(4v/(A+4)\)
- \(4v/(A-4)\)
- \(2v/(A-4)\)
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The Correct Option is C
Solution and Explanation
Concept:
Conservation of momentum.
\[
m_\alpha v = M_d V
\]
Step 1: Masses \[ m_\alpha = 4,\quad M_d = A-4 \]
Step 2: Velocity \[ V = \frac{4v}{A-4} \]
Step 1: Masses \[ m_\alpha = 4,\quad M_d = A-4 \]
Step 2: Velocity \[ V = \frac{4v}{A-4} \]
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