If the magnitudes of two vectors \overrightarrow{a} and \overrightarrow{b} are equal then which one of the following is correct?

Correct Answer is : (→a+→b) is perpendicular to (→a−→b)

(\overrightarrow{a}+\overrightarrow{b}) is parallel to (\overrightarrow{a}-\overrightarrow{b})

(\overrightarrow{a}+\overrightarrow{b}) \cdot(\overrightarrow{a}-\overrightarrow{b})=1

(\overrightarrow{a}+\overrightarrow{b}) is perpendicular to (\overrightarrow{a}-\overrightarrow{b})

UPSC NDA I 2012 Mathematics Paper

Question : 92 of 120

Marks: +1, -0

If the magnitudes of two vectors

→

and

→

are equal then which one of the following is correct?

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