1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A steady flow of a liquid of density $$\rho$$ is shown in figure. At point 1, the area of cross-section is $$2 A$$ and the speed of flow of liquid is $$\sqrt{2} \mathrm{~ms}^{-1}$$. At point 2 , the area of cross-section is $$A$$. Between the points 1 and 2, the pressure difference is $$100 \mathrm{~Nm}^{-2}$$ and the height difference is 10 cm . The value of $$\rho$$ is (Acceleration due to gravity $$=10 \mathrm{~ms}^{-2}$$)

AP EAPCET 2022 - 4th July Evening Shift Physics - Fluid Mechanics Question 2 English

A
$$25 \mathrm{~kg} \mathrm{~m}^{-3}$$
B
$$30 \mathrm{~kg} \mathrm{~m}^{-3}$$
C
$$50 \mathrm{~kg} \mathrm{~m}^{-3}$$
D
$$70 \mathrm{~kg} \mathrm{~m}^{-3}$$
2
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Statement (A) When the temperature increases the viscosity of gases increases and the viscosity of liquids decreases.

Statement (B) Water does not wet an oily glass because cohesive force of oil is less than that of water.

Statement (C) A liquid will wet a surface of a solid, if the angle of contact is greater than $$90^{\circ}$$.

A
A, B and C are false.
B
A and B false, C is true.
C
B and C false, A is true.
D
A and C false, B is true.
3
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

A glass flask weighting 390 g, having internal volume 500 cc just floats when half of it is filled with water. Specific gravity of the glass is

A
2.8
B
1.8
C
1.0
D
2.5
4
AP EAPCET 2021 - 20th August Morning Shift
MCQ (Single Correct Answer)
+1
-0

Water does not wet an oily glass because

A
cohesive force of oil is greater than adhesive force between oil and glass
B
cohesive force of oil is greater than cohesive force of water
C
oil repels water
D
cohesive force of water is greater than adhesive force between water and oil molecules
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