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This quesiton contains Statement-1 and S...

This quesiton contains Statement-1 and Statement-2. Of the four choices given after the statement, choose the one that best describes the two statements.
Statement-1 : The temperature dependence of resistance is usually given as `R = R_(0) (1 + alpha Delta t)`. The resistance of a wire changes from `100 Omega " to " 150 Omega` when its temperture is increased from `27^(@) C` to `227^(@)C`. This implies that `alpha = 2.5 xx 10^(-3)//.^(@)C`.
Statement -2 : `R = R_(1) (1 + alpha Delta T)` is valid only when the change in the temperature `Delta T` is small and `delta R = (R - R_(0)) lt lt R_(0)`

A

Statement-1 is true, statement-2 is true, Statement-2 is the correct explanation of statement-1.

B

Statement-1 is true, statement-2 is true, Statement-2 is not the correct explanation of statement-1.

C

Statement-1 is false, Statement-2 is true

D

Statement-1 is true, Statement-2 is false

Text Solution

Verified by Experts

The correct Answer is:
D
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