PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoA sound wave has a frequency of \(2\) \(kHz\) and wavelength of \(15\) \(cm\). How much time will it take to travel \(1.5\) \(km\)?
A) The formula to find speed is
By applying the value of \(n\) and \(λ)
The speed is \(m/s\)
The sign indicates the image is formed in front of the mirror.
B) The formula to find time
By applying the known values in the formula, we get
\(t\) \(=\) \(s\)
The sound will take \(s\) to travel a distance of \(1.5\) \(km\).
(Answer should be in whole number)
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