Questions
An electron is projected with a velocity v0 in a uniform electric field E perpendicular to the field. Again it is projected with velocity v0 perpendicular to a uniform magnetic field. If r1 and r2 are initial radii of curvature just after entering in the electric field and magnetic field respectively, then the ratio r1/r2 is
detailed solution
Correct option is B
mv02r1=qE ⇒r1=mv02qE----1mv02r2=qv0Br2 =mv0qB----2∴r1r2=Bv0ETalk 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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