Civil Engineering - Elements of Remote Sensing - Discussion

Discussion Forum : Elements of Remote Sensing - Section 3 (Q.No. 40)
40.
Pick up the correct statement from the following:
The wave length of gamma rays is 10-10 m
The wave length of radio rays is 106 m
The visible length occupies a small portion of the electromagntic spectrum extending roughly from 0.4 μ m to 0.7μm wave length.
All of these
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