Elements Of Remote Sensing
If electric permittivity and magnetic permeability of the medium are respectively ‘ε’ and ‘μ’, then the velocity (Cm) of the electromagnetic wave in the medium is given by:

Cm = 1/√8 μ
Cm = 5/√εμ
None of these
Cm = 1/εμ

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

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

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Elements Of Remote Sensing
Geodimeter is based on:

The visible light as carrier with frequency of the order of 5 × 1014 Hz
Propagation of modulated light waves
High frequency radio waves
Propagation of infrared radiation

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