If the angle between the vectors $\vec{A}$ and $\vec{B}$ is $\theta$ , the value of the product $(\vec{B} \times \vec{A}) \cdot \vec{A}$ is equal to :
A
BA²cos²θ
B
BA²sin²θ
C
BA²sinθ cosθ
D
zero

Question

If the angle between the vectors $\vec{A}$ and $\vec{B}$ is $	heta$, the value of the product $(\vec{B} 	imes \vec{A}) \cdot \vec{A}$ is equal to :

Accepted Answer

zero

Answer

BA²cos²θ

Answer

BA²sin²θ

Answer

BA²sinθ cosθ

AIPMT PRELIMS 2005 Physics Vector Products MCQ Question