Properties of Solids & Liquids-Viscosity (AIIMS Physics): Questions 6 - 9 of 9

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Question number: 6

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

800m3 of a viscous liquid flows per unit time due to a pressure head Δp along a pipe of diameter d and length l . Instead of this pipe, a set of eight pipes each of the diameter d2 and length 2l is connected to the same pressure head Δp . What will be the volume of liquid flowing per unit time?

Choices

Choice (4) Response
a.

400m3

b.

200m3

c.

100m3

d.

800m3

Question number: 7

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

Calculate the volume of water flowing in 15 minutes through a horizontal tube of 0.4 cm diameter, 75 cm long. The pressure head across the ends of the tube is 30 cm of water column. Coefficient of viscosity of water is 9×104 S. I. units g=10ms2 .

Choices

Choice (4) Response
a.

14.1×104m3

b.

15.5×103m3

c.

25.1×103m3

d.

32.4×104m3

Question number: 8

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

The rate of flow of a liquid through a capillary tube of radius r is V when the pressure difference across the two ends of the capillary is P. If pressure is increased by 6P and radius is reduced to r3 then the rate of flow becomes,

Choices

Choice (4) Response
a.

2V27

b.

V9

c.

V27

d.

2V9

Question number: 9

» Properties of Solids & Liquids » Viscosity

MCQ▾

Question

A water drop of mass m=500mg is introduced between two plates with separation d=0.06mm. Calculate the force of attraction between the plates.

Choices

Choice (4) Response
a.

16.22N

b.

19.44N

c.

21.12N

d.

17.33N

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