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Elements Of Remote Sensing

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

Spectral variation
Spatial variation
None of these
Temporal variation

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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
Sensors
Passive sensors
None of these

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Elements Of Remote Sensing
Which one of the following statements regarding remote sensing is correct?

Neither (A) nor (B)
Both (A) and (B)
The interaction of the electromagnetic radiation with the target
The emission of electromagnetic radiation from the target

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

USA
India
European Union
Russia

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Elements Of Remote Sensing
The remote sensing techniques applied for the earth's surface features, is generally confined to the following wave lengths:

0.4 to 1.3, 1.5 to 1.8, 2.2 to 2.6 μm
All of these
4.2 to 5.0, 7.0 to 15.0 μm and 1 cm to 30 cm
2.2 to 2.6, 3.0 to 3.6, 4.2 to 5.0 μm

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Elements Of Remote Sensing
The entire range of the electromagnetic spectrum spans a large spectrum of wave lengths varying from:

10-8 to 108 m
10-10 to 106 m
10-10 to 1010 m
10-8 to 106 m

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