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During the propagation of electromagnetic waves in a medium -

1. Electric energy density is half of the magnetic energy density
2. Electric energy density is equal to the magnetic energy density
3. Both electric and magnetic energy densities are zero
4. Electric energy density is double of the magnetic energy density

Correct answer: Electric energy density is equal to the magnetic energy density

Solution

In an electromagnetic wave, the electric and magnetic fields are interrelated, and their energy densities are equal due to the intrinsic properties of electromagnetic radiation, as described by Maxwell's equations.

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