A) \[\sqrt{\frac{2Gm}{r}\left( \sqrt{2}-1 \right)}\]
B) \[\sqrt{\frac{Gm}{r}}\]
C) \[\sqrt{\frac{2Gm}{r}\left( 1-\frac{1}{\sqrt{2}} \right)}\]
D) \[\sqrt{\frac{2Gm}{r}}\]
Correct Answer: C
Solution :
[c] Let 'M' be the mass of the particle |
Now, |
i.e. |
or |
or |
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