The temperature dependence of resistance of Cu and undoped Si in the temperature range 300 - 400   K is…

The temperature dependence of resistance of Cu and undoped Si in the temperature range 300-400 K is best described by
  1. linear increase for Cu, exponential decrease for Si
  2. linear decrease for Cu, linear decrease for Si
  3. linear increase for Cu, linear increase for Si
  4. linear increase for Cu, exponential increase for Si

Solution

Resistance variation with temperature: resistance of a metal increases with increase in temperature linearly and resistance of a semiconductor decreases exponentially with increase in temperature.

Asked in: JEE Main 2016 (03 Apr)

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