A) 81 cm/sec
B) 63 cm/sec
C) 144 cm/sec
D) None of these
Correct Answer: C
Solution :
Ratio in radius of steel balls = 1/2 So, ratio in their masses\[=\frac{1}{8}\] [As\[M\propto V\propto {{r}^{3}}\]] Let \[{{m}_{1}}=8m\] and \[{{m}_{2}}=m\]You need to login to perform this action.
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