Question 341: Thermodynamics & KTG

Question

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : When a rod lying freely is heated, no thermal stress is developed in it.
Reason R : On heating, the length of the rod increases.
In the light of the above statements, choose the correct answer from the options given below :

Accepted Answer

When a rod is free and it is heated then there is no thermal stress produced in it.
The rod will expand due to increase in temperature.
So both A & R are true.

Answer

A is true but R is false

Answer

A is false but R is true

Answer

Both A and B are true but R is NOT the correct explanation of A

Answer

Both A and R are true and R is the correct explanation of A

Thermodynamics & KTG

Choose the correct answer: