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In a capillary tube experiment, a vertic...

In a capillary tube experiment, a vertical 30 cm long capillary tube is dipped in water. The water rises up to a height of 10 cm due to capillary action. If this experiment is conducted in a freely falling elevator, the length of te water column becomes

A

10 cm

B

20 cm

C

30 cm

D

zero

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The correct Answer is:
C
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ALLEN -ELASTICITY, SURFACE TENSION AND FLUID MECHANICS-Exercise 1 (Surface Tension)
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  3. A liquid drop of diamtere D breaks into 27 tiny drops. The resultant c...

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  4. The adjoining diagram shows three soap bubbles, A , B and C prepared b...

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  5. Pressures inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio...

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  6. An air bubble is lying just below the surface of water. The surface te...

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  7. Two soap bubbles each of radius r are touching each other. The radius ...

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  8. A soap bubble in vacuum has a radius of 3 cm ad another soap bubble in...

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  9. Shape of menuscus of a liquid of zero angle of contact is

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  10. If a water drop is kept between two glass plates, then its shape is

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  11. If a wax coated capillary tube is dipped in water, then water in it wi...

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  12. Water rises to a height h in a capillary at the surface of earth. On t...

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  13. Two capillary tubes of same diameter are put vertically one each in tw...

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  14. In a capillary tube experiment, a vertical 30 cm long capillary tube i...

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  15. Water rises to a height of 16.3 cm in a capillary of height 18 cm abov...

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  16. The height to which water rises in a capillary will be

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  17. Water rises in a capillary upto a height h. If now this capillary is t...

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  18. If a capillary of radius r is dipped in water the height of water that...

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  19. Calculate the force required to separate the glass plates of area 10^(...

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  20. A vessel, whose bottom has round holes with diameter of 0.1 mm , is fi...

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