If \overrightarrow{a} and \overrightarrow{b} are two vectors such that |\overrightarrow{a}+\overrightarrow{b}|=|\overrightarrow{a}-\overrightarrow{b}|=4, then which one of the following is correct? [NDA-I 2021]

Correct Answer is : →amust be perpendicular to →b

\overrightarrow{a} and \overrightarrow{b} must be unit vectors.

a ^{\to} must be parallel to b^{\to}

a ^{\to}must be perpendicular to b ^{\to}

a ^{\to} must be equal to \overrightarrow{b}.

UPSC NDA I 2021 Mathematics Solved Paper

Question : 118 of 120

Marks: +1, -0

→

and

→

are two vectors such that |

→

|=|

→

−

→

|=4,‌‌ then which one of the following is correct?

[NDA-I 2021]

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