Question

If an electron has an initial velocity in a direction
different from that of an electric field, the path of
the electron is
(a) a straight line (b) a circle
(c) an ellipse (d) a parabola

Answer 1

Answer:

Explanation:

The path is a parabola, because initial velocity can be resolved into two components, one along

E

and other perpendicular to

E the former decreases at a constant rate and latter is unaffected. The resultant path is therefore a parabola.

Answer 2

Answer:(d)

Explanation:

It is parabola