NEET UG PHYSICS MCQ: MOTION IN PLANE

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The expression

\frac{1}{{\sqrt 2 }}i + \frac{1}{{\sqrt 2 }}j

is a

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Correct option: A

Unit vector

The expression

\frac{1}{{\sqrt 2 }}i + \frac{1}{{\sqrt 2 }}j

is a unit vector because its magnitude is equal to 1.

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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)