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 $

Show Answer

Answer:

Correct Answer: B

Solution:

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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