Mechanical Properties of Fluids Test

Result

Mechanical Properties of Fluids Test - 27

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Question 1
4 / -1

In a capillary tube, water rises to 3mm.The height of water that will rise in another capillary tube having one-third radius of the first is

A
1 mm

B
3 mm

C
6 mm

D
9 mm

Solution
Question 2
4 / -1

If the surface tension of water is 0.06 Nm^–1 , then the capillary rise in a tube of diameter 1 mm (θ = 0^o) is

A
1.22 cm

B
2.44 cm

C
3.12 cm

D
3.86 cm

Solution
Question 3
4 / -1

Two capillary tubes of radii 0.2 cm and 0.4 cm are dipped in the same liquid . The ratio of heights through which liquid will rise in the tubes is

A
1 : 2

B
2 : 1

C
1 : 4

D
4 : 1

Solution
Question 4
4 / -1

The action of a nib split at the top is explained by

A
Gravity flow

B
Diffusion of fluid

C
Capillary action

D
Osmosis of liquid
Question 5
4 / -1

If capillary experiment is performed in vacuum then for a liquid there

A
It will rise

B
Will remain same

C
It will fall

D
Rise to the top
Question 6
4 / -1

If liquid level falls in a capillary then radius of capillary will

A
Increase

B
Decrease

C
Unchanged

D
None of these

Solution
Question 7
4 / -1

A cork is submerged in water by a spring attached to the bottom of a bowl. When the bowl is kept in an elevator moving with acceleration downwards, the length of spring

A
Increases

B
Decreases

C
Remains unchanged

D
None of these
Question 8
4 / -1

A hollow sphere of volume V is floating on water surface with half immersed in it.

A
V/2

B
V/3

C
V/4

D
V

Solution
Question 9
4 / -1

A ball whose density is 0.4 × 10⁴ kg/m³ falls into water from a height of 9 cm.To what depth does the ball sink

A
9 cm

B
6 cm

C
4.5 cm

D
2.25 cm

Solution
Question 10
4 / -1

A piece of solid weighs 120 g in air , 80 g in water and 60g in a liquid.The relative density of the solid and that of the liquid are respectively

A
3,2

B
2,3/4

C
3/2,2

D
3,3/2

Solution