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The resistances in the two arms of the ...

The resistances in the two arms of the metre bridge are `5Omega` and `"R "Omega`, respectively. When the resistance R is shunted with an equal resistance, the new balance point is at `1.6" "l_(1)`. The resistance R, is

A

`10Omega`

B

`15Omega`

C

`20Omega`

D

`25Omega`

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