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Shane Macguire Grade: upto college level
        A proton described a circle of radius 1 cm in a magnetic field of strength 0.10 T. What would be the radius of the circle described by an α-particle moving with the same speed in the same magnetic field?
3 years ago

Answers : (1)

Deepak Patra
askIITians Faculty
474 Points
										Sol. r = mv/qB

0.01 = mv/e0.1 …(1)
r = 4m * V/2e * 0.1 …(2)
(2) ÷ (1)
⇒ r/0.01 = 4mVe * 0.1/2e * 0.1 * mv = 4/2 = 2 ⇒ r = 0.02 m = 2 cm.
3 years ago
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