A) v
B) v/4
C) v/2
D) 2v
Correct Answer: C
Solution :
[c] If \[\rho \] is the density of the ball and p' that of the another ball, m for the balls are the same, but \[r'=2r\] \[\therefore \,\,\,mg=6\pi r\eta v=6\pi 2r\eta v'\] So, \[v'=\frac{v}{2}\]You need to login to perform this action.
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