A police car with its siren sounding is stationary in heavy traffic
PHYSICS · Single correct · GCSE · Physics · Waves · Waves
Problem
A police car with its siren sounding is stationary in heavy traffic. A pedestrian notices that, although the loudness of the sound produced does not change, the pitch varies. Which row describes the amplitude and the frequency of the sound?| amplitude | frequency | |
|---|---|---|
| A | constant | constant |
| B | constant | varying |
| C | varying | constant |
| D | varying | varying |