∇ × ∇ × P, where P is a vector, is equal to (a) × ∇ × − �

1.	∇ × ∇ × P, where P is a vector, is equal to (a) × ∇ × − ∇2 (b)∇2 + ∇(∇ ∙ P) (c) ∇2 + ∇ × P (d)∇(∇ ∙ P) − ∇2P
Answer» Correct option (d) Explanation: ∇ × ∇ × = ∇(∇.P) − ∇²P

∇ × ∇ × P, where P is a vector, is equal to (a) × ∇ × − ∇2 (b)∇2 + ∇(∇ ∙ P) (c) ∇2 + ∇ × P (d)∇(∇ ∙ P) − ∇2P

Answer»

Correct option (d)

Explanation:

∇ × ∇ × = ∇(∇.P) − ∇²P

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∇ × ∇ × P, where P is a vector, is equal to (a) × ∇ × − ∇2 (b)∇2 + ∇(∇ ∙ P) (c) ∇2 + ∇ × P (d)∇(∇ ∙ P) − ∇2P

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