Question
Why is the de Broglie wavelength associated with macroscopic objects (cricket ball, car, etc.) not observed in daily life?
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Answer
de Broglie wavelength, $\lambda=\frac{\text{h}}{\text{mv}}$
As h is very small and for macroscopic objects the mass is very large; therefore, de Broglie wavelength associated is much smaller than the size of objects; hence de Broglie wavelength associated with them is not observable.
As h is very small and for macroscopic objects the mass is very large; therefore, de Broglie wavelength associated is much smaller than the size of objects; hence de Broglie wavelength associated with them is not observable.
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