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Electromagnetic Waves — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves2 Marks
Question
  1. Why are infra-red waves often called heat waves? Explain.
  2. What do you understand by the statement, ‘‘Electromagnetic waves transport momentum’’?
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Answer

  1. Infrared waves are prdocued by vibration of atoms of molecules which increases the temperature due which they are also the cause of heat energy.
  2. Electromagnetic waves also show particle nature, i.e., they aslo behave as a matter according to Plank’s Quantum theory, So, they also possess some momentum and they can also change momentum.

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