In the visible spectrum which colour has the shortest wavelength?

A. Red

B. Blue

C. Yellow

D. Violet

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  5. The completely dark portion of a shadow of an object is known as
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  7. The attraction of unlike molecules at the common surface is known as
  8. The tiniest of the stars belong to the group known as
  9. Stars twinkle because of
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  11. In a freezer ice cubes will be formed more quickly in trays made of
  12. The filament used in the electric lamp is made of
  13. The largest reserve of radioactive element which can be used in a nuclear reactor has been found in…
  14. The colour of a star is an indication of its
  15. If a band is played on the moon the sound will
  16. The principle of equivalence of mass and energy was established by
  17. The speed at which light travels in vacuum is
  18. The number of galaxies that are visible without telescope on clear dark nights and away from bright…
  19. The velocity of sound in a medium is
  20. Acoustics' la a branch or study dealing with
  21. Mercury is used in a barometer because
  22. When light passes from air to glass, its velocity in glass
  23. The Indian Space Research Organisation (ISRO) is located at
  24. The extremely luminous objects located at the centre of some distant galaxies and which are sources…
  25. The electrical domestic tube light gives white fiourescent light because of
  26. A proton is
  27. Sun spots are
  28. Moon has no atmosphere because
  29. A nuclear reactor is said to have become 'critical' when
  30. When a satellite la In a geostationary orbit the force keeping it in orbit Is