InterviewSolution
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InterviewSolution
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A particle of specific charge (charge/mass) `alpha` starts moving from the origin under the action of an electric field `oversetrarrE = E_(0)hati` and magnetic field `oversetrarrB = B_(0)hatk` Its velocity at `(x_(0),y_(0).0)` is `(4hati +3hatj)` The value of `x_(0)` is .A. `(13)/(2) (alphaE_(0))/(E_(0))`B. `(16)/(2) (alphaE_(0))/(B_(0))`C. `(25)/(2alphaE_(0))`D. `(5alpha)/(2B_(0))` |
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Answer» Correct Answer - C Work done electric field `=DeltaK` `qE_(0)X_(0) = (1)/(2) mv^(2)` `x_(0) = (1)/(2) (mv^(2))/(qE_(0))` `oversetrarrV =4hati + 3hatj implies V =5 ` From (1) and (2) `x_(0) = (25)/(2 alpha E_(0))` . |
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