Elements Of Remote Sensing
"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:

Fresnel reflection
Fresnel refraction
Snell's law
None of these

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Elements Of Remote Sensing
Which one of the following parameters is accurate for DGPS?

Positional accuracies ~ 5 - 10 m if rover is less than 5-10 km from reference station
Positional accuracies ~ 1 - 2 m if rover is less than 1-2 km from the reference station
Positional accuracies ~ 2 - 5 m if rover is less than 2-5 km from the reference station
Positional accuracies ~ 5 - 10 m if rover is less than 25 km

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

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Elements Of Remote Sensing
Which one the following is a correct statement?

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
The transitional layer between two adjoining horizons is called boundary

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