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

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Elements Of Remote Sensing
Geodimeter is based on:

Propagation of infrared radiation
Propagation of modulated light waves
High frequency radio waves
The visible light as carrier with frequency of the order of 5 × 1014 Hz

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Elements Of Remote Sensing
Earth observations from a satellite platform provide:

Synoptic view of a large area
Constant solar zenith angles and similar illumination conditions
All of these
Repetitive observations of the same area with intervals of a few minutes to a few weeks

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