Match each complete rod arrangement in Column-I with all applicable statements in Column-II. Column-I Column-II (A) Single horizontal heavy rod, one end free and one fixed; A below middle, B above. (P

Question

Match each complete rod arrangement in Column-I with all applicable statements in Column-II.

Column-I	Column-II
(A) Single horizontal heavy rod, one end free and one fixed; A below middle, B above.	(P) Tensile stress at A
(B) Two rods joined on smooth ground and heated; $Y_{A} > Y_{B}$ , $α_{A} > α_{B}$ .	(Q) Tensile stress at B
(C) Two rods joined in series and fixed at both ends in gravity-free space; heated from natural lengths; $Y_{A} > Y_{B}$ .	(R) Compressive stress at A
(D) Two rods fixed together on a smooth surface, heated and prevented from bending; $α_{A} > α_{B}$ , $Y_{A} < Y_{B}$ .	(S) Compressive stress at B
	(T) No elastic potential energy in rod containing A

TestHub · Accepted Answer

(A) Gravity produces tensile stress at both A and B, so A → P,Q.

(B) On smooth ground both rods expand freely, so stress and elastic energy are zero; B → T.

(C) Fixed ends oppose thermal expansion, so both rods are in compression; C → R,S.

(D) Compatibility with $a lp h a_{A} > a lp h a_{B}$ and $Y_{A} < Y_{B}$ makes A tensile and B compressive; D → P,S.

Final mapping: A → P,Q; B → T; C → R,S; D → P,S.

Physics - Thermal Properties of Matter Question with Solution | TestHub