The resistance R of a conductor varies with the temperature as shown in the figure. If it is written as R1=R0(1+αt+βt2)
A
α and β are both negative
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B
α is positive and β is negative
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C
α and β are both positive
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D
α is negative and β positive
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Solution
The correct option is Cα and β are both positive From graph, the resistance R increases with the increase of temperature. Thus, the constants α and β should be positive. As dR1dt and also d2R1dt are positive.Hence correct option is option C.