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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe velocity of a small ball of mass m and density when dropped in a container filled with glycerin of density becomes constant after sometime. The viscous force acting on the ball in the final stage is:-
1.
2.
3.
4. mg
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe 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 \(d\over 2\) then the viscous force acting on the ball will be:
1. | \(\frac{3Mg}{2}\) | 2. | \(2Mg\) |
3. | \(\frac{Mg}{2}\) | 4. | \(Mg\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyTwo small spherical metal balls, having equal masses, are made from materials of densities \(\rho_1\) and \(\rho_2\) such that \(\rho_1=8\rho_2\)
1. | \(\dfrac{79}{72}\) | 2. | \(\dfrac{19}{36}\) |
3. | \(\dfrac{39}{72}\) | 4. | \(\dfrac{79}{36}\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology