A charged particle with some initial velocity is projected in a region where non-zero electric and/or magnetic fields are present. In column-I, information about the existence of electric and/or magnetic field and direction of initial velocity of charged particle are given, while in Column-II the probable path of the charged particle is mentioned. Match the entries of Column-I with the entries of Column-II
Column-I | Column-II | ||
(I) | ,and initial velocity may be at any angle with | (P) | Straight line |
(II) | and initial velocity may be at any angle with | (Q) | Parabola |
(III) | and initial velocity is to both | (R) | Circular |
(IV) | is perpendicular to and perpendicular to both and | (S) | Helical path with nonuniform pitch |
; 
; (III) 
; (IV) 
; 
; (III) 
; (IV) 
Text Solution
Verified by ExpertsA
(I) Since 
and 
, so path will be straight line if velocity is parallel to 
. Or path will be circular if 
. Or path will be helical (with uniform pitch) if 
is at some other angle to 
Hence, 
(II) Since 
and 
, so path will be straight
line if 
or parabola otherwise
Hence, 
(III) 
Helical path with non-uniform pitch
Here, III → S
(IV) Straight line path if 
Hence, 
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