Elements Of Remote Sensing
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

Five ground stations
Three ground stations
Six ground stations
Four ground stations

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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);

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
Neither (A) nor (B)

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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 layers of the soil parallel to the earth surface are called horizons
The vertical section of the soil extending into the parent material, is called profile
All of these

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Elements Of Remote Sensing
‘A’ and ‘B’ are two towers of equal height diametrically opposite on either side of the nadir point, at 3 km and 5 km distances. Which one of the following statements is correct?

Height displacement of A and B will be towards each other
Height displacement of B will be less than that of A
Height displacement of A and B is equal
Height displacement of A will be less than that of B

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