Question

Assertion : Good conductors of heat are also good conductors of electricity and vice versa.

Reason : Mainly electrons are responsible for these conductions.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (a) Both A and R are true and R is the correct explanation of A

Explanation:

Metals are good conductors of electricity. It is because of the presence of a large number of free electrons in metals. And for metals electrons are the main cause for thermal conduction. That'* why all good conductors of heat are also good conductors of electricity.