Dopplers effect with there cases . And also derive the formulas of these cases
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Using the fact that the wavelength is equal to the speed times the period, and the period is the inverse of the frequency, we can derive the observed frequency: λo=λs+ΔxvTo=vTs+vsTsvfo=vfs+vsfs=v+vsfsfo=fs(vv+vs).
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Doppler Effect refers to the change in wave frequency during the relative motion between a wave source and its observer.
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