A) \[\frac{2\sqrt{\mathrm{R}}}{\sqrt{\mathrm{g}}\,\mathrm{cos}\,\theta }\]
B) \[\frac{2\sqrt{\mathrm{R}}\,\mathrm{cos}\,\theta }{\mathrm{g}\,}\]
C) \[2\sqrt{\frac{\mathrm{R}}{\mathrm{g}\,}}\]
D) \[\frac{\sqrt{\operatorname{gR}}}{\cos \,\theta \,}\]
Correct Answer: C
Solution :
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