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

A film of soap solution is formed between two straight parallel wires of length $$10 \mathrm{~cm}$$ each separated by $$0.5 \mathrm{~cm}$$. If their separation is increased by $$1 \mathrm{~mm}$$ while still maintaining their parallelism. How much work will have to be done?

(surface tension of solution $$=65 \times 10^{-2} \mathrm{~N} / \mathrm{m}$$ )

A
$$7.22 \times 10^{-6} \mathrm{~J}$$
B
$$13.0 \times 10^{-5} \mathrm{~J}$$
C
$$2.88 \times 10^{-5} \mathrm{~J}$$
D
$$5.76 \times 10^{-5} \mathrm{~J}$$
2
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.
3
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
$$\frac{2 \eta \mathrm{dv}}{\rho}$$
4
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.
MHT CET Subjects
Physics
Mechanics
Optics
Electromagnetism
Modern Physics
Chemistry
Physical Chemistry
Inorganic Chemistry
Organic Chemistry
Mathematics
Algebra
Trigonometry
Calculus
Coordinate Geometry
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