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Question

If temperature is decreased, then relaxation time of electrons in metals will


A
increase
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B
decrrease
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C
fluctuate
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D
remains constant
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Solution

The correct option is A increase
With decrease in temperature, resistance of metal conductor decreases. But  $$R \propto  \dfrac{1}{\tau}$$, therefore time of relation $$\tau$$ increases. that's why the correct answer is option A.

Physics

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