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The resistances in the two arms of the m...

The resistances in the two arms of the metre bridge are 5`Omega` and R `Omega` respectively. When resistance R is shunted with an equal resistance, the new balance point is at 1.6`l_1`.The resistance R, is:

A

10`Omega`

B

15`Omega`

C

20`Omega`

D

25`Omega`

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