An electromagnetic wave travelling through a transparent me…

Physics Wave Optics Principle of Superposition, Path Difference, Wavefronts, and Coherence MCQ (Single Correct)

An electromagnetic wave travelling through a transparent medium is given by in S Ι units. Then what is the refractive index of the medium?

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(2)

Sol. we know that equation of light wave

E = E 0 sin ( ω t – kx )

speed of wave v =

by comparing the given equation v = 3 × 10 4 × 5 × 10 –7

v = 15 × 10 7 m/s

Here ¡

ω = vk

Now μ = = = 2.

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