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Elements Of Remote Sensing

Elements Of Remote Sensing
The reflectance from a surface is called specular reflection if it follows:

All of these
Snell’s law
Planktan
Lambert

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Elements Of Remote Sensing
The infrared portion of EMR lies between

0.7 to 14 μm
0.4 - 0.7 μm
0.5 mm to 1 μm
0.7 - 1.3 μm

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Elements Of Remote Sensing
Due to perturbation of the orbit, satellite orbit parameters are frequently updated on measurements carried out by its

Three ground stations
Five ground stations
Four ground stations
Six ground stations

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Elements Of Remote Sensing
A passive sensor uses:

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

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

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

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Elements Of Remote Sensing
The instruments which provide electromagnetic radiation of specified wave length or a band of wave lengths to illuminate the earth surface are called:

Active sensors
None of these
Passive sensors
Sensors

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