There is region of space where uniform magnetic field of induction B exists. The field exists at all points for which `x-` coordingates are positive. The direction of field ia along negative z axis.
Now a certain charged particle of mass m and charge q a certain speed enters in this region. A magnetic field at a point whose coordinates are `x=0,y=-d` and `z=0` . Magnetic force will start acting on the particle and particle moves in a uniform circular motion, such that origin becomes centre of circular path described by it
The particle enters into the region of magnetic field along a direction
A. parallel to `y-` axis
B. at an angle `37^(@)` with `x-` axis
C. along `x-` axis
D. along a direction of `45^(@)` with `x-` axis
