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

Electric waves
Wind waves
Electromagnetic waves
Sound waves

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Elements Of Remote Sensing
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,

Reduces the contrast of the image and also its sharpness
Reduces the contrast but increases the sharpness
Increases both the contrast and sharpness
Increases the contrast of the image but reduces the sharpness

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