In a metre bridge experiment , resistance box with 2 Ω is connected in the left gap and the unknown resistance S in the right gap. If the balancing length be 40 cm, value of S will be *
(a) 2 Ω
(b) 3 Ω
(c) 4 Ω
(d) 5 Ω
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mai class 8th me hu ye mujhe samajh nahi aara ha h sorry bro
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