Physics-
General
Easy
Question
A source producing sound of frequency 170 Hz is approaching a stationary observer with a velocity 17 ms–1. The apparent change in the wavelength of sound heard by the observer is (speed of sound in air = 340 ms–1)
- 0.1m
- 0.2m
- 0.4m
- 0.5m
The correct answer is: 0.1m
Now 
Þ 
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