Elements Of Remote Sensing
According to the Snell's law if an electromagnetic wave is incident in a medium (refractive index n₁) on another medium (refractive index m₂);

Neither (A) nor (B)
Both (A) and (B)
The angle of refraction (θr) is given by sin θ₂ = (n₁/n₂) sin θi
The angle of incidence is equal to the angle of refraction

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Elements Of Remote Sensing
Which one of the following statement is incorrect regarding the electromagnetic radiation?

None of these
These are produced by the motion of electric charge
The oscillation of charged particles sets up changing electric fields
The changing electric fields induce the changing magnetic fields in the surrounding medium

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