Matter Waves: Electrons with a speed of 2.1 × 106 m/s are directed towards a 1.0-?m wide slit. An electron detector is placed 1.0 m behind the slit. How wide is the central maximum of the electron diffraction pattern on the detector? (h = 6.626 × 10-34 J ? s, melectron = 9.11 × 10-31 kg)

A. 690 ?m
B. 350 ?m
C. 1000 ?m
D. 1400 ?m


Answer: A

Physics & Space Science

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