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