What is the effect of using a sensor with a limited range when trying to detect obstacles at long distance?

• A. Objects beyond range may not be detected.
• B. Objects beyond range are detected more accurately.
• C. Range has no effect on obstacle detection.
• D. Range increases sensor color accuracy.

Answer: (A)

Sensor range defines how far away an obstacle can be detected. If something is beyond that maximum distance, the sensor can’t sense it, so obstacles at long range may not be detected. This is exactly why the answer states that objects beyond range may not be detected. The limitation matters for safety and planning: to catch distant obstacles you’d need a sensor with a longer range or an additional sensing method. Range does affect obstacle detection; it doesn’t make distant objects more, or any, detectable, and color accuracy isn’t a factor for typical range-based obstacle sensing.