A cricket ball moving at shows no observable diffraction when it passes through a…

PHYSICS · Single correct · A Level · Physics · Particles and radiation · Particles and radiation

Problem

A cricket ball moving at 30 m s−130\,\text{m s}^{-1} shows no observable diffraction when it passes through a doorway 1 m1\,\text{m} wide. Which statement best explains this observation? (a) Its speed is too high for noticeable diffraction to occur. (b) Since the doorway width is much larger than the diameter of the ball, diffraction cannot occur. (c) Its de Broglie wavelength is far smaller than the doorway width. (d) Diffraction occurs only for charged particles.

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