Rain drops acquire spherical shape due to

A. viscosity

B. surface tension

C. friction

D. elasticity

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  1. The motion .of the pendulum of a wall clock is an example of
  2. In a dynamo
  3. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight…
  4. To produce beats it is necessary to have two waves
  5. The leader of the team who succeeded in constructing the first nuclear reactor (an atomic pile) in the…
  6. An electric fan converts
  7. The light from the star nearest to the sun reaches the earth in
  8. The direction of heat flow between two objects depends on
  9. The Indian Satellite System used for domestic communications, television and meteorology is known as
  10. An ohm is a unit of
  11. Increase in pressure
  12. The star nearest to the sun is
  13. The force that keeps a body in a circular motion la called
  14. The maximum displacement of the particle in a mechanical wave motion is known as
  15. The scientist who first sent electromagnetic waves to distant places was
  16. The planet that spins Caster than any other planet is
  17. The world's first artificial satellite Sputnik I was launched by Russia in
  18. In very cold countries alcohol is used as a thermometric liquid because
  19. Powder clings to the skin because of
  20. In a freezer ice cubes will be formed more quickly in trays made of
  21. Radio waves sent out by radio stations are reflected by
  22. If an object is placed between two parallel plane mirrors, the number of images formed will be
  23. A bullet is fired at a certain angle with the horizontal. Its path will be
  24. A hydrogen bomb is based on
  25. Which physical quantity is measured in watts
  26. Solids have definite shapes. This is because
  27. The filament lamp is an example for
  28. Cyclotron is an apparatus used
  29. A workman was working on a rail track. A young boy at a distance holds his ear close to the railway…
  30. The spectrum of white light can be studied by