Correct option: (A) → q ; (B) → p, r ; (C) → p, s, t ; (D) → q, s, t
Explanation:
(A) B = mg
(B) B = mg for floatation (same)
one heating ρliquid decreases, so a increases.
(C) B = mg for flotation (same)
At ρliquid increases, a decreases from expression in (B). Also, volume occupied by liquid & therefore b decreases.
(D) From expression in (B), a decreases and as submerged volume decreases b also decreases.