1.

(i) dot product of two vectors is not commutative(ii) If veci,vecj,veck are unit vectors the |veci+vecj+veck|= sqrt 3 (iii) (veca,vecb) X vecc is not defined.(iv)The magnitude of 2veci+vecj-2veck is sqrt3Find which pair of statements are correct.

Answer»

(i) and (II) are TRUE
(i) and (IV) are true
(III) and (iv) are true
(ii) and (iii) are true

Answer :D


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