The temperature dependence of resistances of Cu and undoped Si in the temperature range 300-400 K, is best described by
Linear increase for Cu, linear increase for Si.
Linear increase for Cu, exponential increase for Si.
Linear increase for Cu, exponential decrease for Si.
Linear decrease for Cu, linear decrease for Si.
As we learnt in
Temperature dependent Resistivity -
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Resistivity of cu increases with increase in temperature because relaxation time decreases
Resistivity of semiconductor decreases exponentially with increase in temperature as
Option 1)
Linear increase for Cu, linear increase for Si.
This option is incorrect
Option 2)
Linear increase for Cu, exponential increase for Si.
This option is incorrect
Option 3)
Linear increase for Cu, exponential decrease for Si.
This option is correct
Option 4)
Linear decrease for Cu, linear decrease for Si.
This option is incorrect
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