NEET UG PHYSICS MCQ: MOTION IN PLANE

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Let

\vec{a}

and

\vec{b}

be two vectors inclined at an angle

\theta

, where

\frac{\pi}{2} < \theta < \pi

.
Statement-I:

|\overrightarrow{\mathrm{a}}+\overrightarrow{\mathrm{b}}| < |\overrightarrow{\mathrm{a}}-\overrightarrow{\mathrm{b}}|

Statement-II:

|\vec{a}+\vec{b}|^2=a^2+b^2+2\vec{a} \cdot \vec{b}

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 the magnitude relationship and the expansion of the dot product are accurate.

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