A source emits sound at a fixed constant frequency f .
If you run towards the source, the frequency you hear is lower than f .

Name: A source emits sound at a fixed constant frequency f . If you run towards the source, the frequency you hear is lower than f .
Brand: Quizplus
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Question

A source emits sound at a fixed constant frequency f . 
If you run towards the source, the frequency you hear is lower than f .

Quizplus · Accepted Answer

If you run towards the source, the frequency you hear is higher than f, not lower. This is known as the Doppler effect.

A Source Emits Sound at a Fixed Constant Frequency F