A) \[2\pi \]
B) \[\frac{\pi }{a}\]
C) \[\frac{\pi }{2}\]
D) \[a\pi \]
Correct Answer: C
Solution :
Let ?..(i) ?..(ii) On adding Eqs. (i) and (ii), we get \[l=\frac{\pi }{2}\]You need to login to perform this action.
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