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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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