Properties of matter questions | form five Physics

The surface tension of a fluid is due to

1. molecules on its surface
2. a semi-permeable membrane which covers it
3. The brownian motion of surface molecules
4. the adhesive force between molecules of different materials

Answer / Solution

UNSOLVED

Briefly explain the following observations:
(i) The rise of the liquid is affected if the top of the capillary tube is closed.
(ii) Rain drops are spherical in shape.

Answer / Solution

UNSOLVED

Why brick walls are plastered with cement?

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UNSOLVED

A barometer contains two uniform capillary tubes of radii 6.5×10^-4m and 1.24×10^-3m. If the height of water in a narrow tube is 0.2 m more than that in the wide tube, calculate the true pressure difference.

Answer / Solution

UNSOLVED

What is meant by surface tension? Give its S.I. units.

Answer / Solution

UNSOLVED