Q. 15

For two vectors A

Class 11th Physics - Exemplar 4. Motion In a Plane

Answer :

It is given that , it could be true when |A|=0 or |B|=0 or both are zero.

The given statement can also be true if both conditions are applied together that is

or

Therefore we can write,

This gives the always true condition that is when A is perpendicular to B.

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