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a charged particle enters in a uniform magnetic field with velocity vector at an angle of 30 o with the magnetic field .the pitch of the helical path followed by the particle is L the radius of the helix will be ____
First do the velocity components in x and y direcn. respectively.that are vcos30 and vsin30 m/s.Now to cover the circular path motion, it uses the vertical velocity that is vsin30.Hence Radius = m(vsin30)/qB => mv/2qB = L (given)T = 2*pi*L/vsin30 => 4*pi*L/vPitch = vcos30 * T => 4*pi*L/v * vcos30 => 2root3 * pi * L meter
ans given as tan-1(3/2) --
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