NEET Physics Mechanical Properties of Fluids Questions Solved

If pressure at half the depth of a lake is equal to 2/3 pressure at the bottom of the lake then what is the depth of the lake

(a) 10m                 (b) 20m
(c) 60m                 (d) 30m

(a) Pressure at half the depth = P0+h2dg

Pressure at the bottom = P0+hdg

According to given condition

P0+h2dg=23(P0+hdg)3P0+3h2dg=2P0+2hdgh=2P0dg=2×105103×10=20 m

Difficulty Level:

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