After energy has been emitted by the target, the sensor collects and records the _____.
A
Sunrays
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B
Objects on Earth
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C
Electromagnetic radiation
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D
None of these
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Solution
The correct option is D Electromagnetic radiation
Once the energy makes its way to the target through the atmosphere, it interacts with the target depending on the properties of both the target and the radiation.
After the energy has been scattered by, or emitted from the target, we require a sensor (remote - not in contact with the target) to collect and record the electromagnetic radiation.