Question

Electrons are accelerated through an electric potential V and then fall on a pair of slits that have a separation of 100 nm. The resultant interference pattern indicates that the electrons have a wavelength of 1 nm. i) What is the value of the accelerating electric potential V? ii) After passing through the slits what is the minimum spread in the electron’s momentum in the direction parallel to the plane of the slits and perpendicular to the average path of the electrons? Assume ℎ = 6.626 × 10−34 J.s and electron mass, m = 9.11 × 10−31 kg. Ignore any relativistic effect. ​

Answer 1

Answer:

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