Eduprobe
Question:
In which case will the particle describe a helical path with axis along the positive z-direction?
(IV)(ii)(R)
(III)(iii)(P)
(II)(ii)(R)
(IV)(i)(S)
Solution:
For path to be helix with axis along +ve z-direction, particle should experience a centripetal acceleration in x-y plane. For the given set of options only option (D) satisfy the condition. Path is helical with increasing pitch.