First slide

Young's double slit Experiment

Question

In an experiment similar to Young's experiment, interference is observed using waves associated with electrons. The electrons are being produced in an electron gun. In order to increase the fringe width

Easy

A

electron gun voltage be increased
B

electron gun voltage be decreased
C

the slits be moved away
D

the screen be moved closer to interfering slits

Solution

Fringe width $β = \frac{λD}{2 d}$
According to de Broglie, wavelength
[As V decreases $λ$ increases i.e $β$ increeases

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