Elements Of Remote Sensing
Electromagnetic spectrum contains:

Infrared rays (wave length < 10⁻⁴ m)
Ultraviolet rays (wave length < 10⁻⁶ m)
Gamma rays (wave length < 10⁻¹⁰ m)
All of these

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

The area features which are wholly contained within another area feature, is known so containment
All of these
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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