Home

A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is

A. greater than the weight of the man

B. less than the weight of the man

C. same as the weight of the man

D. zero

You can do it yup
  1. The loudness of a sound is determined by
  2. In experiments on static electricity the standard method for obtaining small amounts of positive electricity…
  3. Tea pots are highly polished
  4. Rays similar to X-rays but of smaller wave length that are given off by radioactive substances are
  5. A star contains
  6. The Space Application Centre for training in Satellite Communication Technology is located at
  7. The instrument used to determine the RD (Relative Density) of a liquid by the principle of floatation…
  8. The unit of heat energy is
  9. Which of the following is known as freon?
  10. Every action has an equal and opposite reaction is Newton's law of Motion
  11. The nuclear model of atom was first visualised by
  12. The source of electric energy in an artificial satellite is
  13. The planet with the reddish tinge is
  14. The phenomenon of radioactivity was discovered by
  15. The resistance of a wire depends on
  16. For detecting and, testing of small electric charges we use
  17. The freezer in a refrigerator is placed near the top
  18. A radio set that uses valves does not start operating immediately when it is switched on whereas a set…
  19. When an electric bulb breaks, there la an explosive sound. That is due to
  20. A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because
  21. Galaxies emit
  22. To concentrate light on the defective teeth, the dentists use
  23. A device used in a ship for the purpose of measuring the depth of the sea is
  24. One can be recognised by his voice alone due to the factor of
  25. Stars twinkle because of
  26. Diamond shines because of its
  27. When a bowler spins a ball, it changes its direction in the air. This is due to
  28. A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift…
  29. Sound waves
  30. Photoelectric cell is a device which converts