Elements Of Remote Sensing
Electromagnetic radiation:

Is capable to travel across space
Once generated, remains self-propagating
Produces a time varying magnetic field and vice versa
All of these

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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,

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

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