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Wave Optics
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.
C.
Linear increase for Cu, exponential decrease for Si.
As we know Cu is a conductor, so increase in temperature, resistance will increase. Then, Si is a semiconductor, so with the increase in temperature, resistance will decrease.
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