GATE Mechanical Engineering (ME) 2021 Shift 2 Solved Paper

Water flows out from a large tank of cross-sectional area A_t = 1 m² through a small rounded orifice of cross-sectional area A_o = 1 cm², located at y = 0. Initially the water level (H), measured from y = 0, is 1 m. The acceleration due to gravity is 9.8 m/s².

Neglecting any losses, the time taken by water in the tank to reach a level of y = H / 4 is __________ seconds (round off to one decimal place).