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The vector r satisfying the conditions t...

The vector r satisfying the conditions that I. it is perrpendicular to `3hati+2hatj+2hatk and 18hati-22hatj-5hatk` II. It makes an obtuse angle with Y-axis III. `|r|=14`.

A

`2(-2hati-3hatj+6hatk)`

B

`2(2hati-3hatj+6hatk)`

C

`4hati+6hatj-12hatk`

D

none of these

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The correct Answer is:
A
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ARIHANT MATHS-PRODUCT OF VECTORS-Exercise (Questions Asked In Previous 13 Years Exam)
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  9. Let vec a= hat i+ hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec ...

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  10. Two adjacent sides of a parallelogram A B C D are given by vec A B=...

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  11. Let P,Q R and S be the points on the plane with position vectors -2hat...

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  12. If aa n db are vectors in space given by vec a=( hat i-2 hat j)/(sq...

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  13. If veca,vecb,vecc and vecd are unit vectors such that (vecaxxvecb)*(...

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  15. Let two non-collinear unit vectors veca and vecb form an acute angle. ...

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  16. Let the vectors PQ,OR,RS,ST,TU and UP represent the sides of a regular...

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  17. The number of distinct real values of lambda , for which the vectors...

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  18. If veca, vecb, vecc are unit vectors such that veca+vecb+vecc=0, find...

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  19. Let A be vector parallel to line of intersection of planes P1 and P2. ...

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  20. Let vec a= hat i+2 hat j+ hat k , vec b= hat i- hat j+ hat ka n d vec...

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  21. Find the 7th term of GP if the first term is 7 and common ratio is 2.

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