Q.
A plane electromagnetic wave is given by E= 100 cos (6x108t+ 4x) V/m propagating in a dielectric medium. The refractive index of the medium is
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a
1.5
b
2
c
2.4
d
3
answer is B.
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Detailed Solution
Velocity of the work is v=ωk=6×1084=32×108μ=cv=3×108×23×108=2
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