Physics
Grade-6
Easy

Question

The transfer of heat in the vacuum is called as ______

  1. Convection
  2. Conduction
  3. Radiation
  4. Osmosis

hintHint:

Radiation does not require any material medium to travel .

The correct answer is: Radiation


    • In vacuum heat gets  transferred in the form of electromagnetic waves.
    • These electromagnetic waves do not require any material medium to travel.
    • Both the process of conduction and convection requires some material particles to transfer the heat .
    • In vacuum there is no such material,  hence heat transfer through both these process is not possible .
    • Hence in vacuum heat transfer occurs through radiation .

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