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What does the DistanceSensor measure using ultrasonic waves?

easy📝 Conceptual Q11 of 15
Raspberry Pi - gpiozero Library
What does the DistanceSensor measure using ultrasonic waves?
AThe speed of sound in water
BThe temperature of the air
CThe distance to an object without touching it
DThe brightness of a light source
Step-by-Step Solution
Solution:
  1. Step 1: Understand the sensor's purpose

    The DistanceSensor uses sound waves to detect how far an object is without physical contact.
  2. Step 2: Identify the correct measurement type

    It measures distance, not temperature, speed, or brightness.
  3. Final Answer:

    The distance to an object without touching it -> Option C
  4. Quick Check:

    DistanceSensor measures distance = C [OK]
Quick Trick: Remember: ultrasonic means measuring distance by sound [OK]
Common Mistakes:
  • Confusing distance with temperature
  • Thinking it measures speed or light
  • Assuming physical contact is needed

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