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Elements Of Remote Sensing

Elements Of Remote Sensing
A passive sensor uses:

Its own source of energy
Flash light as a source of energy
None of these
Sun as the source of energy

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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
The reflectance from a surface is called specular reflection if it follows:

All of these
Lambert
Snell’s law
Planktan

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Elements Of Remote Sensing
The code based GPS receivers are generally used for:

Land navigation
Trans movement
Vehicle tracking
All of these

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Elements Of Remote Sensing
The GPS space segment consists of Navigation Satellite Timing and Ranging whose number is :

16
24
8
12

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Elements Of Remote Sensing
While propagating through homogeneous, isotropic media,

Directions of both the fields are orthogonal
Both (A) and (B)
Neither (A) nor (B)
Both the fields are at right angles to the direction of propagation

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