Elements Of Remote Sensing
Electromagnetic radiation:

Once generated, remains self-propagating
Is capable to travel across space
All of these
Produces a time varying magnetic field and vice versa

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Elements Of Remote Sensing
Pick up the correct definition from the following with response to GIS.

All of these
The area features which are wholly contained within another area feature, is known so containment
The geometric property which describes the linkage between line features is defined as connectivity
Common boundary between two areas of a locality is known as adjacency

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