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Science TN
10th Std
Ch-05: Acoustics
2.
Doppler Effect
Exercise condition:
1
m.
A whistle giving out a sound of frequency
450
Hz
, approaches a stationary observer at a speed of
33
m/s
. The frequency heard by the observer is (speed of sound =
330
m/s
) ____________.
300
Hz
550
Hz
500
Hz
250
Hz
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