Class 11Physics1 Thermal Properties of Matter: Thermometry, Expansion and CalorimetryThermal Expansion for Solid
MediumGiven 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:
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:
- ABoth $A$ and $R$ are true but $R$ is $NOT$ the correct explanation of $A$.
- B$A$ is false but $R$ is true.
- C$A$ is true but $R$ is false.
- DBoth $A$ and $R$ are true and $R$ is the correct explanation of $A$.
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