Geodimeter is based on_________________?

1.	Geodimeter is based on_________________?
A.	Propagation of modulated light waves
B.	Propagation of infrared radiation
C.	The visible light as carrier with frequency of the order of 5 × 1014 Hz
D.	High frequency radio waves
Answer» B. Propagation of infrared radiation

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Geodimeter is based on_________________?

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