A) W/2
B) 2W
C) 4W
D) \[2\frac{1}{3}\]W
Correct Answer: C
Solution :
\[W=8\pi {{R}^{2}}T\] \ \[W\propto {{R}^{2}}\] (T is constant) If radius becomes double then work done will become four times.You need to login to perform this action.
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