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If vec a = hat i - hat j and vec b = hat...

If `vec a = hat i - hat j` and `vec b = hat j + hat k` then `|vec a xx vec b|^(2) + |vec a. vecb|^(2)` is equal to

A

`sqrt2`

B

`2`

C

`sqrt6`

D

`4`

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Verified by Experts

The correct Answer is:
D
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NEW JOYTHI PUBLICATION-VECTOR ALGEBRA-OBJECTIVE TYPE QUESTIONS
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  6. Consider the vectors veca = hat i + 3 hat j + hat k and vec b = 2 hat ...

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  7. If |vec a| = 3, | vec b| = 4, then the value of lambda for which vec ...

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  8. If vec a and vec b are two non -zero vectors, then (vec a + vec b) .(v...

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  9. vec a .(vec b + vec c) is equal to

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  10. If vec a = hat i + 2 hat j - 3 hat k and vec b = 3 hat i - hat j + 2 h...

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  11. If vec a and vec b are non - zero vectors and |vec a+ vec b| = |vec a ...

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  12. The projection of the vector hat i + hat j + hat k along the vector ha...

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  13. A unit vector perpendicular to the vectors veca = 2 hat i - 6 hat j - ...

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  14. The number of vectors of unit length perpendicular to the vectors vec ...

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  15. If vec a, vec b, vec c are any three mutually perpendicular vectors of...

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  16. The volume (in cubic units) of the parallelopiped whose edges are repr...

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  17. The projection vector of veca on vecb is

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  18. If vec a xx vec b and vec a. vecb = 0 then

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  19. If vec a = hat i - hat j and vec b = hat j + hat k then |vec a xx vec ...

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