By increasing the temperature, the specific resistance of a conductor and a semiconductor

By increasing the temperature, the specific resistance of a conductor and a semiconductor
  1. increases for both
  2. decreases for both
  3. increases, decreases
  4. decreases, increases

Solution

Use $\mathrm{R}_{\mathrm{t}}=\mathrm{R}_0\left(\frac{\mathrm{T}}{273}\right)$

Asked in: JEE Main 2002

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