Read the following statements carefully : Y : The resistivity of a semiconductor decreases with increase of temperature. Z : In a conducing solid, the rate of collisions between free electrons and ions increase with increase of temperature. Select the correct statement (s) from the followin :A. Y is true but Z is falseB. Y is false but Z is true.C. Both Y and Z are trueD.

Read the following statements carefully : Y : The resistivity of a sem

1.	Read the following statements carefully : Y : The resistivity of a semiconductor decreases with increase of temperature. Z : In a conducing solid, the rate of collisions between free electrons and ions increase with increase of temperature. Select the correct statement (s) from the followin :A. Y is true but Z is falseB. Y is false but Z is true.C. Both Y and Z are trueD.
Answer» Correct Answer - C (c ) The conductivity of a semiconductor increases with increases in temperature i.e. the resistivity decreases with increases in temperature. In a conducting solid, the collisions become more frequent with increase of temperature.

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