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Question

Vector A and B are mutually perpendicular. Component of A+B in the direction of AB will be -

A
A2+B2A2B2
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B
A2B2
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C
A+BAB
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D
A2B2A2+B2
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Solution

The correct option is C A2B2A2+B2

Unit vertor along AB

AB|AB|=ABA2+B2

So, component of A+B along AB

(A+B)(AB)A2+B2=A2B2A2+B2

Hence, correct option is option d.


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