Question
Read the passage given below and answer the following questions from (i) to (v). The figure shows the different modes of transfer of heat, heat transfer is defined as the movement of heat across the border of the system due to a difference in temperature between the system and its surroundings. The temperature difference exists between the two systems, heat will find a way to transfer from the higher to the lower system.
  1. The sea breeze is caused by:
    1. conduction
    2. convection
    3. radiation
    4. none of these
  2. At what factor heat absorbed on radiation by the body depends on?
    1. distance between body
    2. source of heat
    3. its color
    4. all of the above
  3. When heat is transferred by molecular collision, it is referred to as heat transfer by:
    1. convection
    2. conduction
    3. radiation
    4. convection and radiation
  4. Thermal conductivity of air with rise in temperature:
    1. increase
    2. decrease
    3. constant
    4. none of these
  5. Mass transfer does not take place in:
    1. conduction
    2. convection
    3. radiation
    4. none of these

Answer

  1. (b) convection
  2. (d) all of the above
  3. (a) convection
  4. (a) increase
  5. (c) radiation

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