Home
Class 12
PHYSICS
A magnetic field B exists between OA and...

A magnetic field B exists between OA and OB. Inclined at an angle `(theta)`, a charged particle strikes at point A on surface OA, at a distance `(2K cos(theta))(qvB)` from O, where K is kinetic energy, q is the charge and v is the velocity of the particle. At what angle with horizontal (measured from end B) will the charged particle emerge from OB?

A

`theta`

B

`90^(@)-theta`

C

`90^(@)+theta`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`r=(mv)/(qB)=(2K)/(qvB)`
Thus, `OA = r cos theta (given)`

On line OB, centre O' of part of circle (in which particle moves) lies. The tangent at C with OB makes an angle of `90^(@)`. Particle leaves circular path at C. thus, required angle `90^(@)`.
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS|Exercise Multiple Correct|34 Videos

  • MISCELLANEOUS VOLUME 5

    CENGAGE PHYSICS|Exercise Linked Comprehension|84 Videos

  • MISCELLANEOUS VOLUME 3

    CENGAGE PHYSICS|Exercise True and False|3 Videos

  • Moving charges and magnetism

    CENGAGE PHYSICS|Exercise Question Bank|20 Videos

Similar Questions

Explore conceptually related problems

A paricle is projected at an anged theta from the horizontal with kinetic energy (T). What is the kinetic energy of the particle at the highest point ?

AB and AC are boundary lines within which a magnetic field B exists. If the magnetic field is absent, a charged particle of mass m and charge q must have passed through a point P on angle bisector of -BAC, at a distance r(sqrt2) from A, if it has fallen on AB normally at a point Q such that QP =r. If the magnetic field is present, how much time the charged particle will take to come out of the magnetic field

A particle is projected horizontal with a speed u from the top of plane inclined at an angle theta with the horizontal. How far from the point of projection will the particle strike the plane?

A particle is projected with velocity v at an angle theta aith horizontal. The average angle velocity of the particle from the point of projection to impact equals

A charged particle of mass m and charge q is released from rest in an electric field of constant magnitude E . The kinetic energy of the particle after time t is

A particle is projected horizontally with a speed u from the top of plane inclined at an angle theta with the horizontal. How far from the point of projection will the particle strike the plane ?

A charged particle q is moving in the presence of a magnetic field B which is inclined to an angle 30° with the direction of the motion of the particle. Draw the trajectory followed by the particle in the presence of the field and explain how the particle describes this path.