A parallel stream of electrons accelerated by a potential difference `V= 25 V` falls normally on a diaphragm with two narrow slits separated by a distance `d=50 mu m`. Calculate the distance betweeb neighbouring maxima of the diffraction patterns on a screen located at a distance `=100` cm from the slits.

A parallel stream of electrons accelerated by a potential difference `

1.	A parallel stream of electrons accelerated by a potential difference `V= 25 V` falls normally on a diaphragm with two narrow slits separated by a distance `d=50 mu m`. Calculate the distance betweeb neighbouring maxima of the diffraction patterns on a screen located at a distance `=100` cm from the slits.
Answer» From the Young slit formula `Deltax=(l lambda)/(d)=(l)/(d).(2piħ)/(sqrt(2meV))` Substitution gives `Deltax= 4.90 mu m`.

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