1
MHT CET 2023 9th May Evening Shift
+1
-0

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

A
exactly double.
B
slightly more than 4 times.
C
slightly less than 4 times.
D
slightly less than double.
2
MHT CET 2023 9th May Evening Shift
+1
-0

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

A
$$\frac{2 \mathrm{~d} \rho \mathrm{v}}{\eta}$$
B
$$\frac{\mathrm{d} \rho \mathrm{v}}{\eta}$$
C
$$\frac{\mathrm{d} \rho v}{\eta^2}$$
D
$$\frac{2 \eta \mathrm{dv}}{\rho}$$
3
MHT CET 2023 9th May Morning Shift
+1
-0

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

A
velocity is maximum and pressure minimum.
B
pressure is maximum and velocity minimum.
C
both pressure and velocity are minimum.
D
both pressure and velocity are maximum.
4
MHT CET 2023 9th May Morning Shift
+1
-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

A
$$1: 3$$
B
$$27: 1$$
C
$$1: 9$$
D
$$1: 27$$
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