Questions
An electron of mass 0.90 x 10-30 kg under the action of magnetic field moves in a circle of radius 2.0 cm at a speed of 3.0 x 106 m/sec. If a proton of mass 1.8 x 10-27 kg were to move in a circle of the same radius in the same magnetic field, then its speed will be
detailed solution
Correct option is B
We know that r=mvqB∴ rpre=mpme×vpve ∵qp=qeGiven that rp = re∴ vp=ve×memp=3⋅0×1060⋅90×10−301⋅8×10−27=1⋅5×103m/sTalk to our academic expert!
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A charged beam consisting of electrons and positrons enter into a region of uniform magnetic field B perpendicular to field, with a speed v. The maximum separation between an electron and a positron will be (mass of electron = mass of positron = m)
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