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Q.

As temperature increases the ratio of resistivity to conductivity

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a

Increases

b

Decreases

c

Remains constant

d

May increase or decrease depending on temperature

answer is A.

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Detailed Solution

As the temperature increases, Resistivity increases and conductivity decreases The ratio of Resistivity to conductivity increases when temperature of a material is increased. Because the value in denominator decreases and the value in numerator increases

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