Kinematics Question 258

Question: If A×B=B×A then the angle between A and b is [AIEEE 2004]

Options:

A) p / 2 $

$

B) p / 3

C) p

D) p / 4

Show Answer

Answer:

Correct Answer: C

Solution:

We know that A×B=(B×A)

because the angle between these two is always 90°.

But if the angle between A

and B is 0 or p .

Then A×B=B×A=0 .



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