NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Medium

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Application +4 | -1

Two metal spheres are falling through a liquid of density

2 \times {10^3}kg/{m^3}

with the same uniform speed. The material density of sphere 1 and sphere 2 are

8 \times {10^3}kg/{m^3}

and

11 \times {10^3}kg/{m^3}

respectively. The ratio of their radii is

View answer and explanation

Correct option: D

\sqrt {\frac{3}{2}}

Option D (

\sqrt {\frac{3}{2}}

) is correct because at terminal velocity, the net force is zero, and equating the buoyant force and weight allows us to relate the radii to the densities.

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