In a double slit experiment, a beam of electrons strikes a pair of slits. The slits are 15 ?m apart, and the first interference maximum lies at an angle of 0.50 µrad from the center of the interference pattern
What is the momentum of the incoming electrons? (h = 6.626 × 10-34 J ? s, mel = 9.11 × 10-31 kg)
A) 4.4 × 10-23 kg ? m/s
B) 2.2 × 10-23 kg ? m/s
C) 1.1 × 10-23 kg ? m/s
D) 6.6 × 10-23 kg ? m/s
E) 8.8 × 10-23 kg ? m/s
Answer: E
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