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

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

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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
All of these
Repetitive observations of the same area with intervals of a few minutes to a few weeks

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