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
Correct Answer: B
Solution :
As \[E=cB\] So required ratio \[\frac{E}{B}=c\] \[\frac{B}{E}=\frac{1}{c}\] Therefore, the ratio of amplitude of magnetic field to the amplitude of electric field for an electromagnetic wave propagating in vacuum is equal to reciprocal of speed of light.You need to login to perform this action.
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