The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagatting in vacuum is equal to (a) the speed of light in vacuum (b) reciprocal of speed of light in vacuum (c) the ratio of magnetic permeability to the electric susceptibility of vacuum (d) unity

Answer: (b). In vacuum E₀ = cB₀. (B₀)/(E₀) = 1/c, the reciprocal of the speed of light. So the answer is (b).

The ratio of amplitude of magnetic field to the amplitude of electric… | NEET 2012 (AIPMT, Mains)

Q84NEET 2012 · AIPMT · MAINSEasy

Nature of EM Waves & Wave Equation

The ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagatting in vacuum is equal to

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Answer: (b)