A uniform magnetic field acts at right angles to the direction of moti – McqOptions

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1.	A uniform magnetic field acts at right angles to the direction of motion of electrons. As a result, the electron moves in a circular path of radius 2 cm. If the speed of the electrons is doubled, then the radius of the circular path will be [CBSE PMT 1991]
A.	2.0 cm
B.	0.5 cm
C.	4.0 cm
D.	1.0 cm
Answer» D. 1.0 cm

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