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Choose the correct statement...

Choose the correct statement

A

Terminal velocities of rain drops are proportional to square of their radii

B

Water proof agents decrease the angle of contact between water and fibres

C

Detergents increase the surface tension of water

D

Hydraulic machines work on the principle of Torricelli's law

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  2. The relative velocity of two parallel layers of water is 8 cm/sec. If ...

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  3. Choose the correct statement

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  4. When a ball is released from rest in a very long column of viscous. L...

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

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  6. Which graph represents the variation of surface tension with temperatu...

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  7. When a large bubble rises from the bottom of a lake to the surface its...

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  8. What is the velocity v of a metallic ball of radius r falling in a tan...

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  9. Two pieces of metals are suspended from the arms of a balance and are ...

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  10. A block of material of specific gravity 0.4 is held submerged at a dep...

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  11. Figure shows a capillary tube C dipped in a liquid that wets it. The l...

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  12. A small spherical ball falling through a viscous medium of negligible ...

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  13. Two non-mixing liquids of densities rho and (n gt1) are put in a cont...

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  14. A thin liquid film formed between a U-shaped wire and a light slider s...

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  15. Two liquids of densities d(1) and d(2) are flowing in identical capill...

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  16. Let T(1) be surface tension between solid and air, T(2) be the surface...

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  17. A uniform rod of density rho is placed in a wide tank containing a liq...

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  18. A spherical ball of iron of radius 2 mm is falling through a column of...

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  19. A film of water is formed between two straight parallel wires each 10 ...

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  20. A water proofing agent chages the angle of contact from

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