If two liquids of same masses but densities ${\mathrm{\rho }}_{1}$ and ${\mathrm{\rho }}_{2}$ respectively are mixed, then density of mixture is given by

(a) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}{2}$                             (b) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}{2{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}$

(c) $\mathrm{\rho }=\frac{2{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}$                             (d) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}$

Concept Questions :-

Properties of fluids
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

If two liquids of same volume but different densities ${\mathrm{\rho }}_{1}$ and ${\mathrm{\rho }}_{2}$ are mixed, then density of mixture is given by

(a) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}{2}$                          (b) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}{2{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}$

(c) $\mathrm{\rho }=\frac{2{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}$                           (d) $\mathrm{\rho }=\frac{{\mathrm{\rho }}_{1}{\mathrm{\rho }}_{2}}{{\mathrm{\rho }}_{1}+{\mathrm{\rho }}_{2}}$

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

The density $\mathrm{\rho }$ of water of bulk modulus B at a depth y in the ocean is related to the density at surface ${\mathrm{\rho }}_{0}$ by the relation

(a) $\mathrm{\rho }={\mathrm{\rho }}_{0}\left[1-\frac{{\mathrm{\rho }}_{0}\mathrm{gy}}{\mathrm{B}}\right]$                            (b) $\mathrm{\rho }={\mathrm{\rho }}_{0}\left[1+\frac{{\mathrm{\rho }}_{0}\mathrm{gy}}{\mathrm{B}}\right]$

(c) $\mathrm{\rho }={\mathrm{\rho }}_{0}\left[1+\frac{\mathrm{B}}{{\mathrm{\rho }}_{0}\mathrm{gy}}\right]$                             (d) $\mathrm{\rho }={\mathrm{\rho }}_{0}\left[1-\frac{\mathrm{B}}{{\mathrm{\rho }}_{0}\mathrm{gy}}\right]$

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

With rise in temperature, density of a given body changes according to one of the following relations

(a)                         (b)

(c)                                 (d)

Concept Questions :-

Properties of fluids
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

From the adjacent figure, the correct observation is

(a) The pressure on the bottom of tank (a) is greater than at the bottom of (b).
(b) The pressure on the bottom of the tank (a) is smaller than at the bottom of (b)
(c) The pressure depend on the shape of the container
(d) The pressure on the bottom of (a) and (b) is the same

Concept Questions :-

Pressure
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A given shaped glass tube having uniform cross section is filled with water and is mounted on a rotatable shaft as shown in figure. If the tube is rotated with a constant angular velocity $\mathrm{\omega }$ then

(a) Water levels in both sections A and B go up
(b) Water level in Section A goes up and that in B comes down
(c) Water level in Section A comes down and that in B it goes up
(d) Water levels remains same in both sections

Concept Questions :-

Pressure
Please attempt this question first.

Difficulty Level:

An ice berg of density 900 Kg/${\mathrm{m}}^{3}$ is floating in water of density 1000 Kg/${\mathrm{m}}^{3}$. The percentage of volume of ice-cube outside the water is
(a) 20%                                       (b) 35%
(c) 10%                                       (d) 25%

Concept Questions :-

Archimedes principle
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A log of wood of mass 120 Kg floats in water. The weight that can be put on the raft to make it just sink, should be (density of wood = 600 Kg/${\mathrm{m}}^{3}$
(a) 80 Kg                                                 (b) 50 Kg
(c) 60 Kg                                                  (d) 30 Kg

Concept Questions :-

Archimedes principle
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

A hemispherical bowl just floats without sinking in a liquid of density . If outer diameter and the density of the bowl are 1 m and  respectively, then the inner diameter of the bowl will be

(a) 0.94 m                            (b) 0.97 m
(c) 0.98 m                            (d) 0.99 m

Concept Questions :-

Archimedes principle
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:

In making an alloy, a substance of specific gravity ${\mathrm{s}}_{1}$ and mass ${\mathrm{m}}_{1}$ is mixed with another substance of specific gravity ${\mathrm{s}}_{2}$ and mass ${\mathrm{m}}_{2}$ ; then the specific gravity of the alloy is

1. $\left(\frac{{\mathrm{m}}_{1}+{\mathrm{m}}_{2}}{{\mathrm{s}}_{1}+{\mathrm{s}}_{2}}\right)$                      2. $\left(\frac{{\mathrm{s}}_{1}{\mathrm{s}}_{2}}{{\mathrm{m}}_{1}+{\mathrm{m}}_{2}}\right)$

3. $\frac{{\mathrm{m}}_{1}+{\mathrm{m}}_{2}}{\left(\frac{{\mathrm{m}}_{1}}{{s}_{1}}+\frac{{m}_{2}}{{\mathrm{s}}_{2}}\right)}$                  4. $\frac{\left(\frac{{\mathrm{m}}_{1}}{{\mathrm{s}}_{1}}+\frac{{\mathrm{m}}_{2}}{{\mathrm{s}}_{2}}\right)}{{\mathrm{m}}_{1}+{\mathrm{m}}_{2}}$

Concept Questions :-

Properties of fluids
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: