A) \[\frac{R}{\sqrt{2}}\]
B) \[R/2\]
C) \[\sqrt{2}R\]
D) \[2\,R\]
Correct Answer: D
Solution :
[d] We know that\[\frac{g'}{g}=\frac{{{R}^{2}}}{{{(R+h)}^{2}}}\] \[\therefore \] \[\frac{g/9}{g}={{\left[ \frac{R}{R+h} \right]}^{2}}\] \[\therefore \] \[\frac{R}{R+h}=\frac{1}{3}\] \[\therefore \] \[h=2R\]You need to login to perform this action.
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