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In a metre-bridge when a resistance in the left gap is \(2 \Omega\) and unknown resistance in the right gap, the balance…

Q1

In a metre-bridge when a resistance in the left gap is \(2 \Omega\) and unknown resistance in the right gap, the balance length is found to be \(40\) cm. On shunting the unknown resistance with \(2 \Omega\), the balance length changes by:EndFragment

a

20 cm

b

62.5 cm

c

22.5 cm

d

65 cm

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