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Elements Of Remote Sensing

Elements Of Remote Sensing
In GPS, receivers are used are;

Electronic clocks
Quartz clocks
Mechanical clocks
Atomic clocks

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Elements Of Remote Sensing
Leaf reflectance depends primarily on:

The pigments
Internal cell structure
All of these
Equivalent water content

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Elements Of Remote Sensing
Pick up the important characteristic of a target which facilitates its identification from the following:

Spatial variation
Spectral variation
Temporal variation
All of these

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Elements Of Remote Sensing
The coherence length over which there is a strong relationship between amplitudes is;

Inversely proportional to the bandwidth
Directly proportional to the bandwidth
None of these
The square of the bandwidth

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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
None of these
Snell's law

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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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