Kinematics Question 280
Question: What is the angle between $ (\overrightarrow{P}+\overrightarrow{Q}) $ and $ (\overrightarrow{P}\times \overrightarrow{Q}) $
Options:
A) 0
B) $ \frac{\pi }{2} $
C) $ \frac{\pi }{4} $
D) $ \pi $
Correct Answer: B Vector $ (\vec{P}+\vec{Q}) $ lies in a plane and vector $ (\vec{P}\times \vec{Q}) $ is perpendicular to this plane i.e. the angle between given vectors is $ \frac{\pi }{2} $ .
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