Physics-
General
Easy
Question
A proton, a deutron and an a-particle having the same momentum, enters a region of uniform electric field between the parallel plates of a capacitor. The electric field is perpendicular to the initial path of the particles. Then the ratio of deflections suffered by them is
- 1 : 2 : 8
- 1 : 2 : 4
- 1 : 1 : 2
- None of these
The correct answer is: 1 : 2 : 8
The deflection suffered by charged particle in an electric field is null (p =mu)
Þ null Þ yp : yd : ya null
Since pa = pd = pp (given)
mp : md : ma = 1 : 2 : 4 and qp : qd : qa = 1 : 1 : 2
Þ yp : yd : ya = 1 ´1 : 1 ´ 2 : 2 ´ 4 = 1 : 2 : 8
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