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A charged particle enters a uniform magnetic field perpendicular to its initial direction travelling in air. The path of the particle is seen to follow the path in figure. Which of statements 1–3 is/are correct?
1) The magnetic field strength may have been increased while the particle was travelling in air
2) The particle lost energy by ionising the air
3) The particle lost charge by ionising the air

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1, 2 only are correct

1 only

2, 3 only are correct

1, 2, 3 are correct

answer is B.

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Detailed Solution

Radius of curvature r = $\frac{m v}{Q B}, w h e r e v i s t h e s p e e d .$

From the given diagram , r is decreasing which is possible if v decreases or B increases .

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