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Dual Nature of Radiation and Matter — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsDual Nature of Radiation and Matter2 Marks
Question
Why is the de Broglie wavelength associated with macroscopic objects (cricket ball, car, etc.) not observed in daily life?
✓

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.

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