A spherical ball is dropped in a long column of a highly viscous liquid. The curve in the graph shown, which represents the speed of the ball (\(v\)) as a function of time (\(t\)) is:
           
1. \(D\) 
2. \(A\) 
3. \(B\) 
4. \(C\)
Subtopic:  Viscosity |
 70%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh

The correct statement about the variation of viscosity of fluids with an increase in temperature is:

1. viscosity of gases decreases.
2. viscosity of both liquids and gases increases.
3. viscosity of liquids increases.
4. viscosity of liquids decreases.
Subtopic:  Viscosity |
 73%
From NCERT
NEET - 2022
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The velocity of a small ball of mass m and density ρ when dropped in a container filled with glycerin of density σ becomes constant after sometime. The viscous force acting on the ball in the final stage is:-

1. mgσρ

2. mg1+σρ

3. mg1-σρ

4. mg

Subtopic:  Viscosity |
 73%
NEET - 2021
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Two small spherical metal balls, having equal masses, are made from materials of densities \(\rho_1\) and \(\rho_2\) such that \(\rho_1=8\rho_2\)and having radii of \(1\) mm and \(2\) mm, respectively. They are made to fall vertically (from rest) in a viscous medium whose coefficient of viscosity equals \(\eta\) and whose density is \(0.1\rho_2\). The ratio of their terminal velocities would be:

1. \(\frac{79}{72}\) 2. \(\frac{19}{36}\)
3. \(\frac{39}{72}\) 4. \(\frac{79}{36}\)

Subtopic:  Viscosity |
 78%
From NCERT
NEET - 2019
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NEET 2023 - Target Batch - Aryan Raj Singh
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