Question:
Which one of the following is not a common type of remote sensing sensor?
Which one of the following is not a common type of remote sensing sensor?
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Remote sensing sensors detect electromagnetic energy reflected or emitted from a target, either passively (recording natural energy) or actively (sending out their own energy and recording the return).
Updated On: Jun 16, 2026
- Hyperspectral
- LiDAR
- Radar
- Microphone
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The Correct Option is D
Solution and Explanation
Concept:
Remote sensing sensors detect electromagnetic energy reflected or emitted from a target, either passively (recording natural energy) or actively (sending out their own energy and recording the return).
Step 1:
Hyperspectral sensors record reflected energy in many narrow spectral bands, radar sends out microwave pulses and records their echoes, and LiDAR uses laser pulses to measure distances. All three are established remote sensing sensors.
Step 2:
A microphone detects sound (acoustic pressure) waves, not electromagnetic radiation, so it is not a type of remote sensing sensor used for imaging the Earth's surface.
Answer: Option (4) — Microphone.
Remote sensing sensors detect electromagnetic energy reflected or emitted from a target, either passively (recording natural energy) or actively (sending out their own energy and recording the return).
Step 1:
Hyperspectral sensors record reflected energy in many narrow spectral bands, radar sends out microwave pulses and records their echoes, and LiDAR uses laser pulses to measure distances. All three are established remote sensing sensors.
Step 2:
A microphone detects sound (acoustic pressure) waves, not electromagnetic radiation, so it is not a type of remote sensing sensor used for imaging the Earth's surface.
Answer: Option (4) — Microphone.
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