The change in resistance of a metal wire owing to strain...

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The change in resistance of a metal wire owing to strain is due to
S1: Change in dimension of wire expressed by factor (1-2µ)
S2: Change in resistance ?

A. S1 is true & S2 is false

B. S2 is true & S1 is false

C. Both S1 & S2 are true

D. Both S1 & S2 are false

Answer: Option B

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