Elements Of Remote Sensing
Pick up the important characteristic of a target which facilitates its identification from the following:

Spatial variation
All of these
Temporal variation
Spectral variation

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Elements Of Remote Sensing
Which one of the following statement is incorrect regarding the electromagnetic radiation?

These are produced by the motion of electric charge
The oscillation of charged particles sets up changing electric fields
The changing electric fields induce the changing magnetic fields in the surrounding medium
None of these

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