A) 2
B) 4
C) 8
D) 8
Correct Answer: C
Solution :
Escape velocity,\[{{v}_{e}}=\sqrt{2gR}\] For moon,\[{{v}_{e,\,\,moon}}=\sqrt{2gR}\] For earth,\[{{y}_{e,\,\,moon}}=\sqrt{2\times 6g\times 10R}\] \[\therefore \] \[=\frac{{{v}_{e}}\,\,\,earth)}{{{v}_{e}}(moon)}=\frac{\sqrt{60(2gR)}}{2grR}=\sqrt{60}\approx \mathbf{8}\]You need to login to perform this action.
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