A) \[12\times {{10}^{-6}}J\]
B) \[24\times {{10}^{-6}}J\]
C) \[60\times {{10}^{-6}}J\]
D) \[96\times {{10}^{-6}}J\]
Correct Answer: B
Solution :
Work done, \[W=2T\times A\] \[W=6\times {{10}^{-2}}\times [4\times 5-4\times 4]\times {{10}^{-4}}\] \[=6\times {{10}^{-6}}\times 4\] \[=24\times {{10}^{-6}}J\] (Film has two free surfaces).You need to login to perform this action.
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