Question

A nucleus moving with velocity $\overset{\rightarrow}{v}$ emits an a-particle. If the velocities of a-particle and the remaining nucleus be $\overset{\rightarrow}{v_{1}}$and $\overset{\rightarrow}{v_{2}}$and their masses be m₁ and m₂, then –

• A. All velocity vectors$\overset{\rightarrow}{v}$, $\overset{\rightarrow}{v_{1}}$ and $\overset{\rightarrow}{v_{2}}$ must be parallel
• B. $\overset{\rightarrow}{v}$must be parallel to ($\overset{\rightarrow}{v_{1}}$+ $\overset{\rightarrow}{v_{2}}$)
• C. $\overset{\rightarrow}{v}$must be parallel to (m₁$\overset{\rightarrow}{v_{1}}$ + m₂$\overset{\rightarrow}{v_{2}}$)
• D. None of above

Answer 1

Answer: (C)

$\overset{\rightarrow}{v}$must be parallel to (m₁$\overset{\rightarrow}{v_{1}}$ + m₂$\overset{\rightarrow}{v_{2}}$)

Answer 2

Conceptual