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Magnetics question

2020 · 2 Sep · Shift 2 · Q53
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Magnetics question

2020 · 2 Sep · Shift 2 · Q53

JEE MainPhysicsMagneticsMCQ+4 / −1
The figure shows a region of length ‘l’ with a uniform magnetic field of 0.3 T in it and a proton entering the region with velocity 4 ×\times× 105 ms–1 making an angle 60o with the field. If the proton completes 10 revolution by the time it cross the region shown, ‘l’ is close to (mass of proton = 1.67 ×\times× 10–27 kg, charge of the proton = 1.6 ×\times× 10–19 C) JEE Main 2020 (Online) 2nd September Evening Slot Physics - Magnetic Effect of Current Question 145 English
  1. A
    0.22 m
  2. B
    0.11 m
  3. C
    0.88 m
  4. D
    0.44 m
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