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The sun continuously produces an enormous amount of energy. This la due to

A. nuclear fission

B. nuclear fusion

C. chemical combustion

D. boiling

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  1. When a body is projected upwards
  2. The image of an object formed on the retina of the eye is
  3. When a body Is taken to the poles from the equator, Its weight becomes
  4. The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named
  5. Where does the centre of gravity of a rubber ring lie?
  6. The completely dark portion of a shadow of an object is known as
  7. The cell that can be recharged, after it has run down, by passing a direct current through it from a…
  8. The aneroid barometer uses
  9. A solar eclipse occurs when the earth, the sun and the moon are in a straight line, and
  10. In the fuse of an electrical installation blows out
  11. The asteroids belt lies between the orbits of
  12. An integrated circuit la more advantageous than a conventional circuit because
  13. When a steel ball is placed on the surface of mercury, it does not sink because
  14. The speed of light is minimum while passing through
  15. On the Kelvin scale, the melting point of ice is
  16. Electromagnets are used in
  17. The ozone layer absorbs
  18. Cosmic rays are
  19. For an electron orbiting in a hydrogen atom, the necessary centripetal force keeping it in orbit is…
  20. Increase in pressure
  21. The largest planet in the solar system is
  22. Choose the scalar quantity from the following physical quantities
  23. For detecting and, testing of small electric charges we use
  24. We see the sun before it actually rises on the horizon. This is due to
  25. The atmosphere gets heated up mainly by
  26. A small bubble of air deep down in a lake rises up to the top of the lake. The volume of the bubble…
  27. In the case of bodies falling under gravity which of the following remains constant at a given place?
  28. A bullet is fired at a certain angle with the horizontal. Its path will be
  29. The image formed by a plane mirror is
  30. We cannot see and without the aid of a telescope