Statement-I: If $|\vec{a}+\vec{b}|=|\vec{a}-\vec{b}|$, then angle between $\vec{a}$ and $\vec{b}$ is $90^{\circ}$ Statement-II: $\vec{a}+\vec{b}=\vec{b}+\vec{a}$

Statement-I is true and statement-II is false

Statement-I is false and statement-II is true

Statement-I is false and statement-II is false

NEET UG PHYSICS MCQ: MOTION IN PLANE

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Analyzing +4 | -1

Statement-I: If

|\vec{a}+\vec{b}|=|\vec{a}-\vec{b}|

, then angle between

\vec{a}

and

\vec{b}

90^{\circ}

Statement-II:

\vec{a}+\vec{b}=\vec{b}+\vec{a}

View answer and explanation

Correct option: A

Statement-I is true and statement-II is true

Option A (Statement-I is true and statement-II is true) is correct because both statements are individually true and relevant to vector algebra.

Practice All Chapter MCQs →

\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)