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The projection of the vector veca=2hati+...

The projection of the vector `veca=2hati+3hatj+2hatk` on the vector `vecb=hati+2hatj+hatk` is :

A

1) `5/(sqrt3) sqrt6`

B

2) `2/3 sqrt5`

C

3) `5/3 sqrt6`

D

4) `5/6 sqrt3`.

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MODERN PUBLICATION-VECTORS-Exercise
  1. If vecaxxvecb=|veca||vecb|sin theta hatn, which one is correct ?

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  2. If veca*vecb=-|veca||vecb|, then theta=

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  3. The projection of the vector veca=2hati+3hatj+2hatk on the vector vecb...

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  4. The area of triangle having adjacent sides veca and vecb is :

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  5. The magnitude of : veca=3hati+2hatj is :

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  6. If veca=3hati-hatj+2hatk,vecb=hati-3hatk, then veca*vecb is :

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  7. If veca=hati+2hatj+5hatk,vecb=2hati+3hatj, then the value of vecaxxvec...

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  8. Let the vectors veca and vecb be such that |veca|=3 and |vecb|=(sqrt2)...

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  9. For a unit vector veca if (x-veca)*(x+veca)=12, then |x| is equal to :

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  10. Projection of vector veca on other vector vecb is equal to :

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  11. Which of the following is true :

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  12. The angle between the vectors veca and vecb such that |veca|=|vecb|=sq...

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  13. If the points A and B are (1,2,-1) and (2,1,-1) respectively, then vec...

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  14. If veca and vecb are vectors such that |veca|=2,|vecb|=3 and veca*vecb...

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  15. The projection of hati-hatj+hatk on hati-hatj is :

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  16. The angle between veca and vecb if vecaxxvecb=veca*vecb is :

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  17. The value of 'lambda' for which the vectors : veca=2hati+3hatj-hatk an...

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  18. If p(hati+hatj+hatk) is a unit vector, then p is equal to :

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  19. The value of 'lambda' for which the vectors : veca=3hati+hatj-2hatk an...

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  20. If veca=2hati+3hatj-5hatk and vecb=hati+hatj-hatk, then veca*vecb is :

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