Teaching MPPSC Assistant Professor Mock Test Series 2025 Physics Thermal Properties of Matter Thermal expansion
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:
1
A is true but R is false
2
Both A and R are true and R is the correct explanation of A
3
Both A and R are true but R is NOT the correct explanation of A
4
A is false but R is true