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The distance between two bodies is halved. Now the force of attraction between them will be

A. half

B. one fourth

C. four times

D. two times

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  1. If you want to open a door with les difficulty you push it
  2. The mass number and the atomic number of an element are X and Y respectively. The number oC neutrons…
  3. The stars that shine brightly then dimly and then brightly are known as
  4. Changing of one element into another element is known as
  5. On the Kelvin scale, the melting point of ice is
  6. The force that keeps a body in a circular motion la called
  7. The planet with the reddish tinge is
  8. What la the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
  9. While crossing a suspension bridge, the soldiers are ordered to break steps because
  10. X-rays are
  11. In the nucleus of an atom, the uncharged particle is
  12. In which of the following will a piece of iron weigh most?
  13. The freezer in a refrigerator is placed near the top
  14. A hydrogen bomb is based on
  15. The speed of light is minimum while passing through
  16. The Cact that the compass needle does not point true north was observed first by
  17. Atoms which have the same atomic number but different mass numbers are called
  18. Photo-electric cells convert
  19. The numerical reading of the Fahrenheit thermometer of a given temperature
  20. A device used in a ship for the purpose of measuring the depth of the sea is
  21. The heating element often used in an electric iron is
  22. Who discovered that the Cree Call acceleration Is the same for any object at a given place?
  23. For accurate scientific work, temperatures are often measured by
  24. The light from the star nearest to the sun reaches the earth in
  25. A bullet is fired at a certain angle with the horizontal. Its path will be
  26. In a river, the currents are fastest where the river la
  27. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching…
  28. The velocity required to place a vehicle in orbit round the moon is _________ that required to place…
  29. Mercury is used in thermometers because
  30. A rod of brass la held in hand and rubbed with fur. The rod is found to have