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Q.

Statement 1: When the length of a conductor is stretched to double, its resistance will also get doubled.Statement 2: Resistance is inversely proportional to the length of a conductor.

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a

Both statements 1 and 2 are correct

b

Statement 1 is correct statement 2 is incorrect

c

Statement 1 is incorrect statement 2 is correct

d

Both statements 1 and 2 are incorrect

answer is D.

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Detailed Solution

R= ρ lAwhen  l=2l,   A=A/2Because  volume V1  = V2 .∴   R'  = 4ρlA
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