**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 :**

with
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**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 :**