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Two rods of same material and length have their electric resistance in ratio `1 : 2`. When both rods are dipped in water, the correct statement will beA. `A` has more loss of weightB. `B` has more loss of weightC. Both have same loss of weightD. Loss of weight will be in the ratio `1 : 2` |
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Answer» Correct Answer - A (a) `R = rho (l)/(A) implies (R_(1))/(R_(2)) = (A_(2))/(A_(1)) (rho, L "constant") implies (A_(1))/(A_(2)) = (R_(2))/(R_(1)) = 2` Now, when a body dipped in water, loss of weigh `V sigma_(L) g Al sigma_(L) g` So, `(("Loss of weigth")_(1))/(("Loss of wight")_(2)) = (A_(1))/(A_(2)) = 2`, so `A` has more loss of weight. |
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