A) \[6.67\times {{10}^{9}}J\]
B) \[6.67\times {{10}^{10}}J\]
C) \[13.34\times {{10}^{10}}J\]
D) \[3.33\times {{10}^{10}}J\]
Correct Answer: B
Solution :
Potential energy of system of two mass \[U=\frac{-GMm}{R}\] = \[\frac{-6.67\times {{10}^{-11}}\times 100\times 10\times {{10}^{-3}}}{10\times {{10}^{-2}}}\] \[U=-6.67\times {{10}^{-10}}J\] So, the amount of work done to take the particle up to infinite will be \[6.67\times {{10}^{-10}}\] J
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