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:

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

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Elements Of Remote Sensing
Due to scan geometry of a satellite sensor:

All of these
The ground distance swept by the senor, IFOV is proportional to sec2θ, where θ is the angle of scan measured from the nadir
The details towards the edge of the scan get compressed
The off-nadir resolution is degraded

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