Given below are two statements: one is labelled Assertion A and the other is labelled Reason R.

Question

G1 Physics · Accepted Answer

For a small sphere falling through a viscous liquid, vₜ ∝ r² Therefore, Δvₜ/vₜ = 2Δr/r Percentage error: (Δvₜ/vₜ) × 100 = 2 × (0.1/5) × 100 = 4% So Assertion A is true. However terminal velocity is directly proportional to r², not inversely proportional to r. Therefore Reason R is false. Hence option D follows.