**Question :** What is the unit vector along î+ j?

(A) î+ ĵ / \sqrt{2}

(B) \sqrt{2} (î+ ĵ)

(C) î+ ĵ

(D) k̂

**Answer :** option (A)

**Solution :**

with
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**Question :** What is the unit vector along î+ j?

(A) î+ ĵ / \sqrt{2}

(B) \sqrt{2} (î+ ĵ)

(C) î+ ĵ

(D) k̂

**Answer :** option (A)

**Solution :**