question_answer 58)

                  Given below in column I are the relations between vectors a, b and c and in column II are the orientations of a, b and c in the XY plane. Match the relation in column I to correct orientations in column II                

Column I	Column II
(a) \[a+b=c\]	(i)
(b) \[a-b=c\]	(ii)
(c) \[b-a=c\]	(iii)
(d) \[a+b+c=0\]	(iv)

                 

Answer:

                  (a) ® (iv); (b) ® (iii); (c) ® (i); (d) ® (ii)                 [using triangle law of vectors addition].