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Elements Of Remote Sensing

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

Spatial variation
None of these
Temporal variation
Spectral variation

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Elements Of Remote Sensing
A perfectly black body:

Absorbs all the radiations of every wave lengths
Is a diffuse emitter
Emits power of every wave length
All listed here

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

Temporal variation
Spatial variation
All of these
Spectral variation

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Elements Of Remote Sensing
Orbital radius of GPS satellites is approximately:

15,200 km
18,400 km
36,000 km
26,600 km

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

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

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Elements Of Remote Sensing
Formation of snow occurs if the cloud temperature is

None of these
Below the freezing point
Just above the freezing point
At the freezing point

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