1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The viscous drag acting on a metal sphere of diameter $$1 \mathrm{~mm}$$, falling through a fluid of viscosity $$0.8 \mathrm{~Pa}$$ s with a velocity of $$2 \mathrm{~m} \mathrm{~s}^{-1}$$ is equal to :

A
$$15 \times 10^{-3} \mathrm{~N}$$
B
$$30 \times 10^{-3} \mathrm{~N}$$
C
$$1.5 \times 10^{-3} \mathrm{~N}$$
D
$$20 \times 10^{-3} \mathrm{~N}$$
2
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The amount of energy required to form a soap bubble of radius $$2 \mathrm{~cm}$$ from a soap solution is nearly: (surface tension of soap solution $$=0.03 \mathrm{~N} \mathrm{~m}^{-1}$$ )

A
$$5.06 \times 10^{-4} \mathrm{~J}$$
B
$$3.01 \times 10^{-4} \mathrm{~J}$$
C
$$50.1 \times 10^{-4} \mathrm{~J}$$
D
$$30.16 \times 10^{-4} \mathrm{~J}$$
3
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

The venturi-meter works on :

A
Bernoulli's principle
B
The principle of parallel axes
C
The principle of perpendicular axes
D
Huygen's principle
4
NEET 2023
MCQ (Single Correct Answer)
+4
-1
Change Language

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $$W$$ attached at its free end. The longitudinal stress at any point of cross-sectional area $$A$$ of the wire is :

A
$$W / A$$
B
$$W / 2 A$$
C
Zero
D
$$2 W / A$$
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