NEET 2017 Physics Pressure in Fluids MCQ Question
A U tube with both ends open to the atmosphere is partially filled with water. Oil, which is immiscible with water, is poured into one side until it stands at a distance of 10 mm above the water level on the other side. Meanwhile the water rises by 65 mm from its original level (see diagram). The density of the oil is:
650 kg m⁻³
425 kg m⁻³
800 kg m⁻³
928 kg m⁻³
Correct Answer
Detailed Explanation
Using the principle of hydrostatic equilibrium, the pressure due to the oil column is balanced by the pressure due to the water column. ρ_oil × g × 10 mm = ρ_water × g × 65 mm, solving gives ρ_oil = 425 kg/m³.
Found an issue with this question?
Related Questions
More from 2017
Out of ‘X’ Pairs of ribs in humans, only ‘Y’ pairs are true ribs. Select the option that correctly represents values of X and Y and provides their exp...
If θ₁ and θ₂ be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip δ is given by
In the following questions, a statement of assertion is given followed by a corresponding statement of reason. Assertion: In an adiabatic expansion pr...