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Cathode rays enter into a unifrom magnet...

Cathode rays enter into a unifrom magnetic field perpendicular to the direction of the field. In the magnetic field their path will be

A

straight line

B

circle

C

parabolic

D

ellipse

Text Solution

Verified by Experts

The correct Answer is:
B
Charged particles trace a circular path in a perpendicular magnetic field.
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Knowledge Check

  • A charged particle enters a uniform magnetic field perpendicular to it. The magnetic field

    A
    increases the `K.E.` of the particle
    B
    decreases the `K.E.` of the particle
    C
    changes the direction of motion of the particle
    D
    does both (a) and ( c)

  • A proton and a deuteron with the same initial kinetic energy enter a magnetic field in a a direction perpendicular to the direction of the field . The ratio of the radii of the circular trajectories described by them is

    A
    `1:4`
    B
    `1:sqrt(2)`
    C
    `1:1`
    D
    `1:2`

  • A proton and a deuteron with the same initial kinetic energy enter a magnetic field in a direction perpendicular to the direction of the field. The ratio of the radii of the circular trajectories described by them is

    A
    `1 : 4`
    B
    `1 : sqrt(2)`
    C
    `1 : 1`
    D
    `1 : 2`

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    An alpha particle and a proton travel with same velocity in a magnetic field perpendicular to the direction of their veloccites find the ratio of the radii of their circular path

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