Elements Of Remote Sensing
The value of energy quantum for radiation of any frequency is proportional to:

The square root of the frequency
The reciprocal of the energy
The square of the frequency
The frequency

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Elements Of Remote Sensing
Due to scan geometry of a satellite sensor:

The off-nadir resolution is degraded
The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir
All of these
The details towards the edge of the scan get compressed

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

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

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