MCQ
If $\vec{P}+\vec{Q}=\vec{P}-\vec{Q}$, then
- A$\vec{P}=\overrightarrow{0}$
- ✓$\vec{Q}=\overrightarrow{0}$
- C$|\vec{P}|=1$
- D$|\vec{Q}|=1$
✓
Answer
Correct option: B.
$\vec{Q}=\overrightarrow{0}$
b
(b) $\vec{P}+\vec{Q} =\vec{P}-\vec{Q}$
(b) $\vec{P}+\vec{Q} =\vec{P}-\vec{Q}$
$\Rightarrow \vec{Q} =0$
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