A tap having an internal diameter of 12 × 10-3 m through which the velocity of the discharged water is 1.0 ms-1 due to continuous flow of water. The diameter of the water stream at a distance of 4 × 10-1 m below the tap is close to
1
8.9 × 10-3 m
2
4 × 10-3 m
3
6.9 × 10-3 m
4
2.4 × 10-3 m