A charged particle of mass and charge is projected from a horizontal ground at an…

PHYSICS · Single correct · CBSE · Physics · Motion in a Plane · Motion in a Plane

Problem

A charged particle of mass

m=2\,\text{kg}

and charge

1\,\mu\text{C}

is projected from a horizontal ground at an angle

\theta=45^\circ

with speed

10\,\text{m s}^{-1}

. In space, a horizontal electric field toward the direction of projection

E=2\times10^7\,\text{N C}^{-1}

exists. The range of the projectile is (1)

20\,\text{m}

(2)

60\,\text{m}

(3)

200\,\text{m}

(4)

180\,\text{m}