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

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

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

The rate of transfer of radiant energy is called flux and is expressed in watts
The radiant energy which falls upon a surface is termed as irradiance
Radiant energy expressed in Joules, is the energy associated with electromagnetic radiation
All of these

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

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

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