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In an experiment similar to young's expe...

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 .

A

electron gun goltage is increased

B

electron gun voltage is decreased

C

the slite be moved away

D

the screen be moved closer to interfering slits.

Text Solution

Verified by Experts

The correct Answer is:
B
`eV= hc// lambda :. lambda= hc//eV`
From above equation as V decreases `lambda` increases.
Therefore bandwith also increases.
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