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 the following is a correct statement?

The transitional layer between two adjoining horizons is called boundary
The vertical section of the soil extending into the parent material, is called profile
All of these
The layers of the soil parallel to the earth surface are called horizons

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