Elements Of Remote Sensing
Geodimeter is based on:

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

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Elements Of Remote Sensing
Which one of the following statement is incorrect regarding the electromagnetic radiation?

These are produced by the motion of electric charge
The changing electric fields induce the changing magnetic fields in the surrounding medium
None of these
The oscillation of charged particles sets up changing electric fields

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