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Elements Of Remote Sensing

Elements Of Remote Sensing
Which one of the following parameters is considered to determine the reflectance of a vegetation canopy?

Look angle
Solar zenith angle
All of these
Azimuth angle

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Elements Of Remote Sensing
"An Electromagnetic wave falls on to a boundary between two losses less homogeneous media with different refractive indices, a part of the wave is reflected back to the incident medium and the rest is transmitted on to the second media". This phenomenon is known as:

Snell's law
None of these
Fresnel reflection
Fresnel refraction

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

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Elements Of Remote Sensing
DGPS is based on the concept that bias errors in the position of locations in a given local area, are same if their distances are within

25 km
100 km
50 km
75 km

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Elements Of Remote Sensing
The value of energy quantum for radiation of any frequency is proportional to:

The reciprocal of the energy
The frequency
The square of the frequency
The square root of the frequency

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Elements Of Remote Sensing
Sensor IFOV is proportional to:

sec²
sin²
tan²
cos²

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