NEET2021Physics-Fluid Mechanics
NEET 2021 Physics Viscosity MCQ Question
Type: MCQ-conceptual-Medium-Class 11
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerine becomes constant after some time. If the density of glycerine is d/2, then the viscous force acting on the ball will be :
A
Mg/2
B
Mg
C
3/2 Mg
D
2Mg
Correct Answer
Option A
Detailed Explanation
At terminal velocity, the net force is zero. The viscous force equals the difference in gravitational and buoyant forces.
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