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Elements Of Remote Sensing

Elements Of Remote Sensing
The changes in the reflectivity/emissivity with time, is called:

Temporal variation
Spectral variation
None of these
Spatial variation

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

8
16
12
24

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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 = vλ
C = 1/λv
C = λ/v
C = v + λ

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Elements Of Remote Sensing
Which one of the following errors is produced by platform characteristics of the sensor?

All of these
Altitude
Orbit drift
Altitude variation

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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
50 km
100 km
75 km

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Elements Of Remote Sensing
'A time varying electric field produces a magnetic field.' This phenomenon is called:

Hertz's law
Ampere Maxwell's law
Kirchoff’s law
Faraday's law

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