Water does not drop through an open umbrella of silk materials unless the inside of…

Water does not drop through an open umbrella of silk materials unless the inside of the umbrella is touched. This is due to
  • A.
    capilarity
  • B.
    osmotic pressure
  • C.
    viscosity
  • D.
    surface tension
Correct Answer: Option D
Explanation

Surface tension – The tendency of a liquid surface to behave as an elastic skin

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In the diagram, O is the centre of the circle, o and o. Calculate the value of m.…
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