Electrons with a Speed of 2

question 37

Multiple Choice

Electrons with a speed of 2.1 × 10⁶ m/s are directed towards a 1.0-μm 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,m_electron = 9.11 × 10^-31 kg)

• A)690 μm
• B)350 μm
• C)1,000 μm
• D)1,400 μm

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