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A ring of radius r, and weight W is lyin...

A ring of radius r, and weight W is lying on a liquid surface . If the surface tension of the liquid is T , then the minimum force required to be applied in order to lift the ring up

A

W

B

2W

C

`W+4pirT`

D

`W+2pirT`

Text Solution

Verified by Experts

The correct Answer is:
C
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MOTION-SURFACE TENSION-Exercise - 2 Objective Problems | NEET
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  2. A rectangular film of a certain liquid is 5 cms long and 3 cms is brea...

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  3. A ring of radius r, and weight W is lying on a liquid surface . If the...

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  4. A thin wire ring of radius of 2m is placed on the surface a liquid. If...

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  8. A large number of liquid drops each of radius 'a' coalesce to form a s...

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  9. There is a small hole in a hollow sphere . The water enters in it when...

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  10. A ring is cut from a platinum tube 8.5 cm internal and 8.7 cm external...

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  11. Water rises in a straight capillary tube upto a height of 5 cm when he...

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  12. Two parallel glass plates are dipped partly in the liquid of density d...

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  13. A capillary tube of radius R is immersed in water and water rises in i...

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  14. When water rises in a capillary tube of radius r to height h, then its...

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  15. In a U-tube the radii of two columns are respectively r(1) and r(2) an...

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  16. The U-tabe with limbs of diameters 5 mm and 2 mm contains water of sur...

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  17. An air bubble of radius 1mm is formed inside water at a depth 10m belo...

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  18. One end of a glass capillary tube with a radius r=0.05cm is immersed i...

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  19. What is the height to which a liquid rises between two long parallel p...

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  20. There is a howizontal film of soap solution. On it a thread is placed ...

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