A) \[\sqrt{2}:1\]
B) 2 : 1
C) 1 : 2
D) \[1:\sqrt{2}\]
Correct Answer: C
Solution :
Kinetic energy \[=\frac{1}{2}m{{v}^{2}}\] As both balls are falling through the same height, therefore they possess same velocity. but \[KE\propto m\] (If\[v=\]constant) \[\therefore \] \[\frac{{{(KE)}_{1}}}{{{(KE)}_{2}}}=\frac{{{m}_{1}}}{{{m}_{2}}}=\frac{2}{4}=\frac{1}{2}\]
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