A small hole of area of cross-section 2 mm2 is present near the bottom of a fully filled open tank of height 2 m. Taking g = 10 m/s2, the rate of flow of water through the open hole would be nearly
(1) 12.6 × 10–6 m3/s
(2) 8.9 × 10–6 m3/s
(3) 2.23 × 10–6 m3/s
(4) 6.4 × 10–6 m3/s
