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Q10: The top of a water tank is open to the air and its water level is maintained. It is giving out 0.74 m³ water per minute through a circular opening of 2 cm radius in its wall. The depth of the centre of the opening from the level of water in the tank is close to

(a) 6.0 m

(b) 4.8 m

(c)9.6 m

(d) 2.9 m

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