Question

(
1. A charged particle enters a uniform magnetic
field perpendicular to its initial direction
travelling in air. The particle is seen to follow the
path as shown in the figure.

(i) The magnetic field strength may have been
increased while the particle was travelling
in air
(ii) The particle lost energy by ionising the air
(iii) The particle lost charge by ionising the air
Which of the above statements is/are corect?
(a) (ii) only
(b) (i) and (ii)
(c) ii) and (iii) (d) (i),(ii) and (iii)
​

Answer 1

Answer:

As the charged particle enters perpendicular to the magnetic field, the force will act perpendicular to the velocity. Thus the particle starts moving in the circular path. As force and displacement are perpendiculars the work done will be zero and kinetic energy will not change. But as it moves in circular path direction of momentum will change but the magnitude is unchanged.

Answer 2

Answer:

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