Question on: WAEC Physics - 2008
a sound wave is produced fron a source ans an echo is heard t seconds afterwards. If d is the distance of the reflecting surface from the source, v the speed, p the wavelength and T the period of the wave, then
A
d = \(\frac{2t}{\lambda}\)
B
d = \(\frac{\lambda t}{2T}\)
C
d = \(\frac{2T}{\lambda t}\)
D
d = \(\frac{\lambda T}{2t}\)
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Correct Option: B
V = (\frac{2d}{t})
f(\lambda = \frac{2d}{t} = \frac{\lambda}{T} = \frac{2d}{t})
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