(A): Two rods of same material but of different lengths are fixed between two rigid points and subjected to same temperature rise. The thermal stress will be more for longer rod.(R): Thermal stress is independent of the length and area of cross-section of the rod.

(A): Two rods of same material but of different lengths are fixed betw

1.	(A): Two rods of same material but of different lengths are fixed between two rigid points and subjected to same temperature rise. The thermal stress will be more for longer rod.(R): Thermal stress is independent of the length and area of cross-section of the rod.
Answer» Both (A) and (R) are TRUE and (R) is the CORRECT EXPLANATION of (A) Both (A) and (R) are true and (R) is not the correct explanation of (A) (A) is true but (R) is false Both (A) and (R) are false Answer :B