A) \[2\sqrt{\operatorname{k}\operatorname{mg}\tan \theta }\]
B) \[\sqrt{\operatorname{k}\operatorname{mg}\tan \theta }\]
C) \[4\sqrt{\operatorname{k}\operatorname{mg}/\tan \theta }\]
D) \[4\sqrt{\operatorname{k}\operatorname{mg}\,\,\tan \theta }\]
Correct Answer: C
Solution :
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