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An electron of kinetic energy K is proje...

An electron of kinetic energy K is projected between two charged plats at an angle `60^(@)` as shown in figure. If electrons doesn't reach to the upper plate just before striking then the magnitude of electric field will be more than:

A

`K/(ed)`

B

`(2K)/(ed)`

C

`K/(2ed)`

D

`3K/(4ed)`

Text Solution

Verified by Experts

The correct Answer is:
D
`tan theta=(qEx)/(mv^(2)),tan theta=(qEx)/(2KE)`
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