A charged particle of specific charge `alpha` moves with a velocity `vecv=v_0hati` in a magnetic field `vecB=(B_0)/(sqrt2)(hatj+hatk)`. Then (specific charge=charge per unit mass)
A. path of the particle is a heix
B. path of the particle is a circle
C. distance moved by the particle in time `t=(pi)/(B_(0)alpha)` is `(pi)/(B_(0))`
D. velocity of particle after time `t=(pi)/(B_(0)alpha)` is `(v_(0)/(2)hati+(v_(0))/(2))`
