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The vectors vec A and vec B are such tha...

The vectors `vec A and vec B` are such that `|vec A + vec B | = |vec A - vec B|` . The angle between the two vectors is

A

`pi//4`

B

`pi//3`

C

`pi//2`

D

none of these

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The correct Answer is:
A
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ML KHANNA-ADDITION AND MULTIPLICATION OF VECTORS -Problem Set (2) (MULTIPLE CHOICE QUESTIONS)
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  12. ai + 3j + 4k and sqrt(b) i+5k are two vectors, where a, b gt 0 are tw...

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  13. A parallelogram is constructed on the vectors r(1) = 3a-b, r(2) = a + ...

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  16. OABC is a parallelogram such that OA = a, OB = b and OC =c, then the v...

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  17. Find the length of perpendicular from the piont A(1,4,-2) to the line ...

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  18. Let the points P, Q and R have position vectors r(1) = 3i-2j-k r(2...

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  19. Given the vectors a=3i-j+5k" and "b=i+2j-3k. A vector c which is perp...

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  20. IF veca, vecb, vecc are the position vectors of the vertices of an equ...

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