JEE Mains 1-Feb-2023 Shift 2 Solved Paper

The surface of water in a water tank of cross section area 750cm2 on the top of a house is hm. above the tap level. The speed of water coming out through the tap of cross section area 500mm2 is 30‌cm∕ s. At that instant, ‌

dh

dt

is x×10−3m∕ s. The value of x will be _______.