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) 1,000 ?m
D) 1,400 ?m
A
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