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Elements Of Remote Sensing

Elements Of Remote Sensing
Which one of the following relationship between the wave length (λ), and frequency and the speed (C) of the electromagnetic wave is correct?

C = λ/v
C = vλ
C = 1/λv
C = v + λ

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Elements Of Remote Sensing
If flying height of a spacecraft is H, the length of air base is B and the parallax difference between two points is dp, then the difference in height

h = dp/(B/H)
h = (H/B) dp
h = (B/H) dp
h = dp/(H/B)

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Elements Of Remote Sensing
The various stages occuring in GPS system are described below: 1. Generation of an output to the user 2. Detection of the GPS signals 3. Processing the data in the built-in-computer 4. Decoding the GPS signal.The correct sequence of the stages is:

2, 3, 4, 1
3, 1, 2, 4
1, 2, 3, 4
2, 4, 3, 1

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Elements Of Remote Sensing
Electromagnetic radiation:

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

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Elements Of Remote Sensing
The basic requirement of any sensor system is:

Spatial resolution
All of these
Radiometric resolution
Spectral resolution

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Elements Of Remote Sensing
A perfectly black body:

Absorbs all the radiations of every wave lengths
Is a diffuse emitter
All listed here
Emits power of every wave length

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