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PhysicsNEET 2024Electromagnetic spectrum

Electromagnetic Waves

The property which is not of an electromagnetic wave travelling in free space is that:

  1. A.The energy density in the electric field is equal to the energy density in the magnetic field
  2. B.They travel with a speed equal to
  3. C.They originate from charges moving with uniform speed✓
  4. D.They are transverse in nature

Solution

Electromagnetic waves are produced by accelerating charges; a charge moving with uniform velocity does not radiate. The other three statements are standard properties of EM waves in free space.

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