A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?

A. conduction and convection only

B. conduction and radiation only

C. convection and radiation only

D. conduction, convection and radiation

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

You can do it
  1. The principle of equivalence of mass and energy was established by
  2. Which of the following pairs is not correct?
  3. Pyrometers are instruments used
  4. Among the following the most suitable material for the core of an electro-magnet is
  5. We cannot see and without the aid of a telescope
  6. The Indian Space Research Organisation (ISRO) is located at
  7. The temperature of a large bucket-full of hot water (a few degrees below boiling point) is lower than…
  8. A device used to measure heights above sea level is known as
  9. Which of the following is fissionable?
  10. The largest planet in the solar system is
  11. A nuclear reactor is said to have become 'critical' when
  12. A small bubble of air deep down in a lake rises up to the top of the lake. The volume of the bubble…
  13. A person does not sink in the Dead Sea because
  14. Separating particles from a suspension is effected by
  15. A sensitive instrument susceptible to magnetic infiuence can be protected from external magnetic field…
  16. On applying a constant force to a mass, It moves with a uniform
  17. Compared to the atomic bomb, the destructive power of a hydrogen bomb is
  18. The aneroid barometer uses
  19. The ozone layer absorbs
  20. The stem of a vibrating tuning fork is pressed against a sound box. Then
  21. Radio waves sent out by radio stations are reflected by
  22. Water has maximum density at
  23. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks…
  24. Electron-volt is a unit of
  25. Moon has no atmosphere because
  26. A pressure gauge for fluids is called
  27. The base of an electric iron is brightly polished mainly
  28. The direction of heat flow between two objects depends on
  29. The instrument used to measure the strength of electric current at a point is
  30. The characteristics of a musical note are