Match Column-I with Column-II.

List 1

1. A. Swimmer 5 m s⁻¹, river 4 m s⁻¹: angle between swimming direction and river flow for minimum drift

2. B. Swimmer 5 m s⁻¹, river 3 m s⁻¹: angle between swimmer velocity relative to river and river flow for minimum crossing time

3. C. Swimmer 4 m s⁻¹, river 3 m s⁻¹: angle of resultant ground velocity with river flow when swimmer aims perpendicular to flow

4. D. Wind southwest at 3√2 m s⁻¹; man west at 7 m s⁻¹: angle between flag direction and north

List 2

1. p. 53°

2. q. 127°

3. r. 143°

4. s. 90°