In a region of space, both electric and magnetic field are present simultaneously in opposite direction. A positively charged particle is projected with certain speed an angle `theta (lt 90^(@))` with magnetic field. It will move in a

Options

A. Helicat path of uniform pitch
B. Helical path of increasing pitch
C. Helical path of decreasing pitch
D. Helical paht, whose pitch first decreases and then increases

Answer

D