A) \[\frac{4\,u}{238}\]
B) \[-\frac{4\,u}{238}\]
C) \[\frac{4\,u}{234}\]
D) \[-\frac{4\,u}{238}\]
Correct Answer: C
Solution :
Apply conservation of linear momentum, we get \[0=4u-234v\] (-ve sign is for opposite direction) \[\Rightarrow \,\,v=\frac{4u}{234}\] The residual nucleus will recoil with a velocity of \[\frac{4u}{234}\] unit. Recoil speed of residual nucleus is \[\frac{4u}{234}\]. NOTE If they ask the recoil velocity, then answer remains same i. e., \[\frac{4u}{234}\] and not \[-\frac{4u}{234}\] as the word recoil itself is signifying the direction of motion of residual nucleus.You need to login to perform this action.
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