Which of the following statements is true regarding the vector product of two vectors?

  • A
    The vector product of two vectors changes sign under reflection.
  • B
    Vector product is commutative.
  • C
    Vector product of two parallel vectors is a null vector.
  • D
    Vector product of two vectors is a scalar.

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For three vectors $\vec{A} = (-x \hat{i} - 6 \hat{j} - 2 \hat{k})$,$\vec{B} = (-\hat{i} + 4 \hat{j} + 3 \hat{k})$ and $\vec{C} = (-8 \hat{i} - \hat{j} + 3 \hat{k})$,if $\vec{A} \cdot (\vec{B} \times \vec{C}) = 0$,then the value of $x$ is:

The area of the triangle formed by the vectors $\vec{a} = 2\hat{i} + \hat{j} - \hat{k}$ and $\vec{b} = \hat{i} + \hat{j} + \hat{k}$ is:

Explain the Right-Hand Screw Law.

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If $\overrightarrow{A} = 2\hat{i} + 3\hat{j} - \hat{k}$ and $\overrightarrow{B} = -\hat{i} + 3\hat{j} + 4\hat{k}$,then the projection of $\overrightarrow{A}$ on $\overrightarrow{B}$ will be:

Vector $A$ is pointing eastwards and vector $B$ is pointing northwards. Match the following two columns:
Column $I$ Column $II$
$(A) (A+B)$ $(p)$ North-east
$(B) (A-B)$ $(q)$ Vertically upwards
$(C) (A \times B)$ $(r)$ Vertically downwards
$(D) (A \times B) \times (A \times B)$ $(s)$ None

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