An electron moving with the speed \( s \times 10^{6} \mathrm{~m} / \mathrm{s} \) is shot paralle...

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An electron moving with the speed \( s \times 10^{6} \mathrm{~m} / \mathrm{s} \) is shot paralle1 to the electrie field of intensity \( 1 \times 10^{3} \mathrm{~N} / \mathrm{C} \). Field is responsible for the retardation of motion of electron. Evaluate the distance travelled by the electron before coming to rest for an instant?
(Mass of \( e=9 \times 10^{-31} \mathrm{~kg} \), charge \( =1.6 \times 10^{-19} \mathrm{C} \) )
(A) \( 7 \mathrm{~m} \)
(B) \( 0.71771 \)
(C) \( 7 \mathrm{~cm} \)
(D) \( 0.7 \mathrm{~cm} \)
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