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If the electric field between the plates...

If the electric field between the plates of a cathode ray oscilloscope be `1.2xx10^(4)N//C` ,the deflection that an electron will experience if it enters at right angels to the field with kinetic energy `200eV` is (the deflection assembly is `1.5cm` long)

A

`0.34mm`

B

`0.57mm`

C

`7.5mm`

D

`0.75mm`

Text Solution

Verified by Experts

The correct Answer is:
4
`Y=(eEx^(2))/(4k)(K=K.E)`
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