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CBSE
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MCQ Questions for CBSE Class 12 with Answers
MCQ Questions for CBSE Class 11 with Answers
MCQ Questions for CBSE Class 10 with Answers
MCQ Questions for CBSE Class 9 with Answers
MCQ Questions for CBSE Class 8 with Answers
MCQ Questions for CBSE Class 7 with Answers
MCQ Questions for CBSE Class 6 with Answers
MCQ Questions for CBSE Class 5 with Answers
MCQ Questions for CBSE Class 4 with Answers
MCQ Questions for CBSE Class 3 with Answers
MCQ Questions for CBSE Class 2 with Answers
MCQ Questions for CBSE Class 1 with Answers
Quiz
CBSE
/
Class 11
/
Physics
/
Mechanical Properties of Fluids
1.
Two soap bubbles have radii in the ratio of 4 : 3. What is the ratio of work done to below these bubbles?
4 : 3
16 : 9
09 : 16
3 : 4
2.
The height of water in a capillary tube of radius 2 cm is 4 cm. what should be the radius of capillary, if the water rises to 8 cm in tube?
1 cm
0.1 cm
2 cm
4 cm
3.
Water rises up to a height of 4 cm, in a capillary tube immersed vertically in water. What will be the length of water column in the capillary tube, if the tube is immersed in water, at an angle of 60° with the vertical?
4 cm
6 cm
8 cm
2 cm
4.
The surface of water in contact with glass wall is
Plane
concave
convex
Both b and c
5.
Pressure inside two soap bubbles is 1.01 and 1.02 atmospheres. ratio between their volume is
102 : 101
(102)3 : (101)3
8 : 1
2 : 1
6.
One end of a towel dips into a bucket full of water and other end hangs over the bucket. It is found that after some time the towel becomes fully wet. It happens
Because viscosity of eater is high
Because of the capillary action of cotton threads
Because of gravitational force
Because of evaporation of water.
7.
If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is
Acute angle
Obtuse angle
90°
0°
8.
Water rises up to a height h, in a capillary tube of radius r. the mass of the water lifted in the capillary tube is M. if the radius of the capillary tube is doubled, the mass of water that will rise in the capillary tube will be
M
2M
M/2
4M
9.
5 g of water rises in the bore of capillary tube when it is dipped in water. If the radius of bore capillary tube is doubled, the mass of water that rises in the capillary tube above the outside water level is
1.5 g
10 g
5 g
15 g
10.
The height of a liquid in a fine capillary tube
Increases with an increase in the density of a liquid
Decreases with a decrease in the diameter of the tube
Decreases with an increase in the surface tension
Increases as the effective value of acceleration due to gravity is decreased
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