NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Hard

1 of 1

Application +4 | -1

A spherical ball of radius

1 \times 10^{-4} \mathrm{~m}

and density

10^5

\mathrm{kg} / \mathrm{m}^3

falls freely under gravity through a distance

h

before entering a tank of water, If after entering in water the velocity of the ball does not change, then the value of

h

is approximately :

(The coefficient of viscosity of water is

9.8 \times 10^{-6}

\left.\mathrm{N} \mathrm{s} / \mathrm{m}^2\right)

View answer and explanation

Correct option: C

2518 \mathrm{~m}

Option C (

2518 \mathrm{~m}

) is correct because it is calculated by equating the weight of the ball to the viscous force when terminal velocity is reached, and then using kinematics to find the height.

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