JEE Main 25 Feb 2021 Shift 1 Solved Paper

Section: Physics

Question : 1 of 90

Marks: +1, -0

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

[25 Feb 2021 Shift 1]

Both A and R are true but R is not the correct explanation of A.
A is false but R is true
A is true but R is false.
Both A and R are true and R is the correct explanation of A.

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