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Elements Of Remote Sensing

Elements Of Remote Sensing
Crop Acreage and Production Estimation (CAPE) was funded and taken up in 1983 by:

Russia
India
European Union
USA

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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:

Fresnel refraction
Fresnel reflection
Snell's law
None of these

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Elements Of Remote Sensing
Rayleigh's criteria for a rough surface is: (where letters carry their usual meanings).

h < λ/8 cos θ
h > λ/Δ cos θ
h > λ/8 cos θ
h = λ/8 cos θ

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Elements Of Remote Sensing
Coherence of two electromagnetic waves takes place if their phase difference is:

None of these
Constant in space
Constant in time and space
Constant in time

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Elements Of Remote Sensing
Which one of the following frequency regions is a part of sun's radiation?

All of these
Infrared frequency region
Ultraviolet frequency region
Radio frequency region

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Elements Of Remote Sensing
A passive sensor uses:

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

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