MHT CET 2025 21st April Morning Shift | Fluid Mechanics Question 4 | Physics

A liquid drop of volume V is placed on the surface of glass plate. Then another glass plate is placed on it such that liquid forms a thin layer of area A between the surfaces of two plates. To separate the plates a force F has to be applied normal to the surfaces. The surface tension of the liquid is

$\frac{\mathrm{FV}}{2 \mathrm{~A}}$

$\frac{\mathrm{FV}}{2 \mathrm{~A}^2}$

$\frac{\mathrm{FV}}{\mathrm{A}^2}$

$\frac{F}{V A}$

MHT CET 2025 21st April Morning Shift

MCQ (Single Correct Answer)

-0

An incompressible fluid flows steadily through a cylindrical pipe having radius R at point A and $\left(\frac{\mathrm{R}}{3}\right)$ at point B further along the direction of flow of liquid. If the velocity at point A is ' V ' then that at point B is

$\frac{\mathrm{V}}{9}$

$\frac{\mathrm{V}}{3}$

3 V

9 V

MHT CET 2025 20th April Evening Shift

MCQ (Single Correct Answer)

-0

Two raindrops reach the earth with different terminal velocities having the ratio $9: 4$. The ratio of their volumes is

$\frac{8}{27}$

$\frac{9}{4}$

$\frac{3}{2}$

$\frac{27}{8}$

MHT CET 2025 20th April Evening Shift

MCQ (Single Correct Answer)

-0

The temperature of an air bubble while rising from bottom to surface of a lake remains constant but diameter is doubled. If pressure on the surface is $h$ meter of mercury column and relative density of mercury is ' $\rho$ ' then the depth of the lake is

$5 \mathrm{~h} \rho$

$7 \mathrm{~h} \rho$

$\frac{3 h}{\rho}$

$\frac{4 h}{\rho}$

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