Uniform magnetic field b_0 exists in circular region, a charge particle (q, m) is projected from (a, 0) with velocity maximum value of v_0 so that particle does not exit the magnetic field region.

 Uniform magnetic field b_0 exists in the circular region, a charged particle (q, m) is projected from (a, 0) with a velocity maximum value of v_0 so that particle does not exit the magnetic field region. The maximum value of v for which the particle does not hit the Y-Z plane is

(a)

(b)

(c)

(d)

Answer: (a)