The frequency of A.C. mains in India is

1.	The frequency of A.C. mains in India is
A.	30c/s
B.	50c/s
C.	\[B\omega {{l}^{2}}\]
D.	120c/s
Answer» C. \[B\omega {{l}^{2}}\]

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The frequency of A.C. mains in India is

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