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:
Held on 25 Feb 2021 · Verified 6 Jul 2026.
Both A and R are true and R is the correct explanation of A
A is false but R is true
Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
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Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: If the average kinetic energy of $H_2$ and $O_2$ molecules, kept in two different sized containers are same, then their temperatures will be same. Reason R: The r.m.s. speed of $H_2$ and $O_2$ molecules are same at same temperature. Choose the correct answer from the options given below
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Work through every JEE Main Thermodynamics PYQ, year by year.