An electron moving along the x-axis with an initial energy of `100 eV` enters a region of magnetic field `vec(B) = (1.5 xx 10^(-3) T) hat (k)` at `S` (see figure). The field extends between `x=0` and `x=2 cm`. The electron is detected at the point `Q` on a screen placed `8` cm away from the point `S`. The distance `d` between `P` and `Q` (on the screen) is :
(electron's charge `= 1.6 xx 10^(-19) C`, mass of electron `= 9.1 xx 10^(-31) kg`).
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