Water is flowing continuously from a tap having an internal diameter 8× 10–3m. The water velocity as it leaves the tap is 0.4ms–1. The diameter of the water stream at a distance 2 × 10–1m below the tap is close to
(a) 5.0 × 10–3m
(b) 7.5 × 10–3m
(c) 9.6 × 10–3m
(d) 3.6 × 10–3m
