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

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

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Elements Of Remote Sensing
Geodimeter is based on:

High frequency radio waves
The visible light as carrier with frequency of the order of 5 × 1014 Hz
Propagation of modulated light waves
Propagation of infrared radiation

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