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Elements Of Remote Sensing

Elements Of Remote Sensing
Which one of the following factors does not affect the scale of the air photographs?

Flying height
Ground elevation
None of these
Focal length

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Elements Of Remote Sensing
Spatial variation in horizontal and vertical directions is caused due to:

All of these
Biological weathering of rocks
Physical weathering of rocks
Chemical weathering of rocks

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Elements Of Remote Sensing
Remote sensing techniques make use of the properties of ___________ emitted, reflected or diffracted by the sensed objects:

Electromagnetic waves
Wind waves
Sound waves
Electric waves

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

India
European Union
Russia
USA

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

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

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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:

Snell's law
Fresnel reflection
None of these
Fresnel refraction

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