CBSE Class 11 Physics Surface Tension Quiz

Play the below CBSE Class 11 Physics Surface Tension Quiz with Answers. Quiz Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have provided Surface Tension Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

1. Spiders and insects move and run about on the surface of water without sinking because
Elastic membrane is formed on water due to propery of surface tension
Spiders and insects are ligther
Spiders and insects swim on water
Spiders and insects experience upthrust

2. Water rises against gravity in a capillary tube when its one end is dipped into water because
Pressure below the meniscus is less than atmospheric pressure
Pressure below the meniscus is more than atmospheric pressure
Capillary attracts water
Of viscosity

3. Water rises up to a height ℎ in a capillary tube of certain diameter. This capillary tube is replaced by a similar tube of half the diameter. Now the water will rise to the height of
4h
3h
2h
h

4. If the surface tension of water is 0.06Nm, then the capillary rise in a tube of diameter 1mm is (𝜃 = 0°)
1.22cm
2.44cm
3.12
3.86

5. Two capillary tubes of radii 0.2𝑐m and 0.4cm are dipped in the same liquid. The ratio of heights through which liquid will rise in the tubes is
1:2
2:1
1:4
4:1

6. Two capillary tubes 𝑃 and 𝑄 are dipped in water. The height of water level in capillary 𝑃 is 2/3 to the height in 𝑄 capillary. The ratio of their diameters is
2:3
3:2
3:4
4:3

7. The liquid meniscus in capillary tube will be convex, if the angle of contact is
Greater than 90°
Less than 90°
Equal to 90°
Equal to 0°

8. A water drop is divided into 8 equal droplets. The pressure difference between inner and outer sides of the big drop
Will be the same as for smaller droplet
Will be half of that for smaller droplet
Will be one-forth of that for smaller droplet
Will be twice of that for smaller droplet.

9. If 𝑇 is the surface tension of a liquid, the energy needed to break a liquid drop of radius 𝑅 into 64 drops is
6𝜋𝑅2𝑇
𝜋𝑅2𝑇
12𝜋𝑅2𝑇
8𝜋𝑅2𝑇

10. A liquid drop of diameter 𝐷 breaks into 27 tiny drops. The resultant change in energy is
2𝜋𝑇D2
4𝜋𝑇D2
𝜋𝑇D2
None of These



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