Question : Given A= î+ 2ĵ− 3k̂. When a vector B⃗ is added to A, We get a unit vector along x=axis. Then, B is
(A) −2ĵ+ 3k̂
(B) −î− 2ĵ
(C) −î+ 3k̂
(D) 2ĵ− 3k
Answer : option (A)
Solution :
Given A= î+ 2ĵ− 3k̂. When a vector B⃗ is added to A, We get a unit vector along x=axis. Then, B is
with
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