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What are electromagnetic waves? Write the expression for the velocity of electro magnetic waves in terms of permittivity and magnetic permeability of free space. |
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Answer» The waves in which there are a sinusoidal variation of electric & magnetic field vectors at right angles to each other & also right angle to the direction of propagation of the wave is called e.m waves. ∴ The expression for velocity of e.m. wave is C = \(\frac{1}{\sqrt{\mu_0 \varepsilon_0}}\) Where µ0 → is permeability of free space, ε0 → is the permeability of free space. |
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