Home

The speed at which light travels in vacuum is

A. 3 x 107 ms-1

B. 5 x 108 ms-1

C. 3 x 104 kms-1

D. 3 x 108 ms-1

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. The ozone layer absorbs
  2. Lightning conductors are made of
  3. The colour of the light which travels through glass with minimum speed is
  4. The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named
  5. When light passes from air to glass, its velocity in glass
  6. The electron has a mass equal to
  7. The theory that the earth constituted the centre of the universe around which the sun and the planets…
  8. The colour or an opaque object is due to the colour it
  9. To get 5 images of a single object one should have two plane mirrors inclined at an angle of
  10. Expansion of a rod when heated
  11. A pressure gauge for fluids is called
  12. The heat produced in a conductor due to the passage of a current through it is proportional to
  13. The electroplating of a metallic article
  14. A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
  15. Which of the following is not electromagnetic waves?
  16. When the earth reaches its perihelion
  17. A hunter on the ground wishes to shoot a bird on a tree at a distance with his rifle. He has to point…
  18. Fish and other aquatic creatures can live inside a deep frozen pond because
  19. Air pressure is usually highest when the air is
  20. The planet with the reddish tinge is
  21. Photo-electric cells convert
  22. The radius of curvature of a spherical mirror is
  23. Which of the following sets of elementary particles have nearly equal masses?
  24. A lactometer la used to
  25. At what temperature do the Fahrenheit and Kelvin scales give the same reading?
  26. The largest reserve of radioactive element which can be used in a nuclear reactor has been found in…
  27. A solid ball of metal has a spherical cavity inside it. When the ball is heated the volume of the cavity…
  28. An ammeter has
  29. Like magnetic poles
  30. An ohm is a unit of