JEE Main2016PhysicsSemiconductorsActual

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

Options

Alinear increase for Cu , exponential decrease for Si
Blinear decrease for Cu , linear decrease for Si
Clinear increase for Cu , linear increase for Si
Dlinear increase for Cu , exponential increase for Si

Correct answer

A. linear increase for Cu , exponential decrease for Si

Step-by-step 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.

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