NEET UG PHYSICS MCQ: MOTION IN PLANE

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Understanding +4 | -1

\mathbf{a}

and

\mathbf{b}

are two vectors, then the value of

(\mathbf{a}+\mathbf{b}) \times(\mathbf{a}-\mathbf{b})

View answer and explanation

Correct option: A

2(\mathbf{b} \times \mathbf{a})

Option A is correct because expanding the cross product and using the properties of the cross product results in 2(b x a).

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\mathrm{\vec a}\,and\,\mathrm{\vec b}

\mathrm{\vec a}\,and\,\mathrm{\vec b}

\overrightarrow P \,\,.\,\,\overrightarrow Q = 0\,and\,\overrightarrow P \,\, \times \,\,\overrightarrow Q = 0

\overrightarrow Q \,and\,\overrightarrow R

\vec{A}=3 \hat{i}+4 \hat{j}

\vec{B}=6 \hat{i}+8 \hat{j}

A

B

\overrightarrow{\mathrm{A}}

\overrightarrow{\mathrm{B}}

{\cot ^{ - 1}}\left( 2 \right)