A) \[2:1\]
B) \[3:1\]
C) \[1:3\]
D) \[1:1\]
Correct Answer: A
Solution :
Kinetic energy of a body \[E=\frac{1}{2}m{{\upsilon }^{2}}=\frac{1}{2m}\,{{(m\upsilon )}^{2}}\] \[=\frac{{{p}^{2}}}{2m}\] \[(\because \,\,p=m\upsilon )\] or \[E\propto \frac{1}{m}\] [\[p=\]constant (given)] \[\therefore \] \[\frac{{{E}_{1}}}{{{E}_{2}}}=\frac{{{m}_{2}}}{{{m}_{1}}}\] \[=\frac{2}{1}=2:1\]You need to login to perform this action.
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