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An electron is projected as shown with speed `u`. If electron just fails to strike the upper plate, find range. (distance from starting point at which electron strike the lower plate again). Consider only electric force. |
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Answer» Correct Answer - 8 `ucosthetaxxt=R` .(1) `darra=((qE)/(m))` `((u)/(sqrt(2)))=((qE)/(m))(t)/(2)impliest=(2mu)/(sqrt(2)qE)` .(2) `((u)/(sqrt(2)))^(2)=2((qE)/(m))dimplies(qE)/(m^(2))=(u^(2))/(4d)` ..(3) `impliest=(2u)/(sqrt(2)u^(2))(4d)=(4sqrt(2)d)/(u)` put in (1) `R=((u)/(sqrt(2)))((4sqrt(2)d)/(u))=4d` |
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