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Explain surface energy and surface tensi...

Explain surface energy and surface tension.

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Statement-1 : Partially transwave waves are possible on a liquid surface Statement-2 : Surface tension provide some rigidity on a liquid surface

The force required to lift a circular flat plate of radius 5 cm on the surface of water is: (Surface tension of water is 75 dyne/cm):-

A wire of mass 1g is kept horizontally on the surface of water. The length of the wire that does not break the surface film is (surface tension of water is 70dynecm^-1 )

The length of needle foating on the surface of water is 1.5 cm the force in addition to its weight required to lift the needle from water surface will be (surface tension of water =7.5N//cm )

Write two units of surface tension .

Explain surface tension in the context of potential energy.

In case of surface of one fluid in contact with other fluid or solid surafce , surface tension/surface energy depends on what ? Explain with illustration.

Explain the terms cohesion force, Adhesive force, surface tension force.

KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION-A Try Yourself (VSQs)
  1. Give the definition of surface tension and formula in the context of (...

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  2. Give two practical illustrations of surface tension.

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  3. Explain surface energy and surface tension.

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  4. A surface of one liquid , is in contact with other liquid or surface o...

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  5. If the molecules of substance attracts each other then the area of sur...

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  6. If the molecules of body repel to each other then the area of surface ...

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  7. Explain surface tension in the context of potential energy.

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  8. Explain surface tension in the context of potential energy.

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  9. Write two units of surface tension .

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  10. Show that ("Joule")/("metre")=("Newton")

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  11. Give the dimensional formula of surface tension.

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  12. On what the value of surface tension depends ?

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  13. What is the effect of increasing temperature on surface tesion ?

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  14. Define angle of contact .

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  15. Give reason : Wing of duck cannot wet in water

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  16. Liquid is stick to the glass then angle of contact for liquid glass wi...

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  17. The angle of contact between mercury and glass is ……. Angle

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  18. The cohesive force between the molecules of liquid is more than the co...

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  19. The cohesive force between the molecules of liquid is less than the co...

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  20. A large pressure exerted on the surface of liquid having shape of …….....

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