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In a Young double slit experiment, the distance between the slits is 50 μm and the distance of the screen from the slits is 5 cm. An infrared monochromatic light is used to produce an interference pattern with fringe width 1 mm. If the light source is replaced by an electron source to produce the same fringe width then the speed of the electrons is approximately

In a Young double slit experiment, the distance between the slits is 50 μm and the distance
of the screen from the slits is 5 cm. An infrared monochromatic light is used to produce an
interference pattern with fringe width 1 mm. If the light source is replaced by an electron
source to produce the same fringe width then the speed of the electrons is approximately

Grade:12

1 Answers

Thiru
26 Points
5 years ago
Since fringe width is equal after replacing electron source, then wavelength of electron is that of IR light. So electron should naturally travel at light velocity

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