Current Electricity Ques 12 — JEE PYQ Chapterwise

12. Read the following statements carefully

$Y$ : The resistivity of semiconductor decreases with increase of temperature.

$Z$ : In a conducting solid, the rate of collisions between free electrons and ions increases with increase of temperature.

Select the correct statement (s) from the following

(a) $Y$ is true but $Z$ is false

(b) $Y$ is false but $Z$ is true

(c) Both $Y$ and $Z$ are true

(d) $Y$ is true and $Z$ is the correct reason for $Y$

(1993, 2M)