Question

Select One Option Correct from the following : A resistance of 2 $\Omega$ is connected across one gap of a meter-bridge (the length of the wire is 100 cm) and an unknown resistance, greater than 2 $\Omega$, is connected across the other gap. When the resistances are interchanged, the balance point shifts by 20 cm. Neglecting any corrections, the unknown resistance is
(A)3 $\Omega$ .
(B)4 $\Omega$ .
(C)5 $\Omega$ .
(D)6 $\Omega$ .

Answer 1

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HERE IS UR ANSWER

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✔✔3 $\Omega$

✏option A is correct.

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