Question

The system that uses the Sun as a source of electromagnetic energy and records the naturally radiated and reflected energy from the object is called

• A. \( \text{Geographical Information System} \)
• B. \( \text{Global Positioning System} \)
• C. \( \text{Passive Remote Sensing} \)
• D. \( \text{Active Remote Sensing} \)

Hint:

Think of "passive" as receiving existing energy (like sunlight), whereas "active" remote sensing involves emitting energy and then measuring the return (like radar).

Answer 1

The Correct Option is C

Passive Remote Sensing systems use the Sun as a source of electromagnetic energy. They record the energy naturally radiated and reflected from the object. They do not emit their own energy source.