Question

30.Assertion and Reason.
Assertion (A): Heat energy is transferred from one body to another due to a temperature difference between
them.
Reason (R) : Heating a substance causes a rise in temperature
Mark the correct choice as
(a) Both A and R are true but R is the correct explanation of assertion.
(b) Both A and R are true but R is not a correct explanation of assertion.
(c) A is true but R is false.
(d) A is false but R is true.

Answer 1

Answer:

a)is the correct answer

Answer 2

(b) Both A and R are true but R is not a correct explanation of assertion is correct choice.

1. Transfer of heat energy can take place through three methods namely conduction, convection and radiation.
2. Flow of heat energy always occurs from region of higher temperature to the region of lower temperature.
3. Further, higher temperature difference favours increased transfer of heat energy.
4. Heating a substance increases its temperature as the electrons gains kinetic energy.