Medium
Physics Riddles
21 XP

The Doppler Shift

6,687 solved 55% solve rate 45% fail rate
An ambulance siren sounds higher as it approaches you and lower as it drives away. What effect explains this?
Only 55% solve this correctly
6,687 attempts
Earn +21 XP for solving
Quick Answer & Explanation
The Doppler Effect

The answer to this riddle is The Doppler Effect. Difficulty: Medium · Solved by 6,687 puzzle lovers.

Change in frequency due to relative motion.
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