MHT CET 2023 9th May Evening Shift | Fluid Mechanics Question 79 | Physics

A soap bubble of radius '$$R$$' is blown. After heating a solution, a second bubble of radius '$$2 \mathrm{R}$$' is blown. The work required to blow the $$2^{\text {nd }}$$ bubble in comparison to that required for the $$1^{\text {st }}$$ bubble is

exactly double.

slightly more than 4 times.

slightly less than 4 times.

slightly less than double.

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-0

A fluid of density '$$\rho$$' and viscosity '$$\eta$$' is flowing through a pipe of diameter '$$d$$', with a velocity '$$v$$'. Reynold number is

$$\frac{2 \mathrm{~d} \rho \mathrm{v}}{\eta}$$

$$\frac{\mathrm{d} \rho \mathrm{v}}{\eta}$$

$$\frac{\mathrm{d} \rho v}{\eta^2}$$

$$\frac{2 \eta \mathrm{dv}}{\rho}$$

MHT CET 2023 9th May Morning Shift

MCQ (Single Correct Answer)

-0

Water is flowing through a horizontal pipe in stream line flow. At the narrowest part of the pipe

velocity is maximum and pressure minimum.

pressure is maximum and velocity minimum.

both pressure and velocity are minimum.

both pressure and velocity are maximum.

MHT CET 2023 9th May Morning Shift

MCQ (Single Correct Answer)

-0

The excess of pressure in a first soap bubble is three times that of other soap bubble. Then the ratio of the volume of first bubble to other is

$$1: 3$$

$$27: 1$$

$$1: 9$$

$$1: 27$$

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