When a positively charged particle enters a uniform magnetic field with uniform velocity is trajectory can be
(a) A circle
(b) A straight line
(c) A helix
(i) (a) only
(ii) (a) or (b)
(iii) (a) or (c)
(iv) Any one of (i)(ii) or (iii)
Answer: (iv)Any one of (i)(ii) or (iii)
Tags:
Physics