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The projection of veca=2hati-hatj+hatk o...

The projection of `veca=2hati-hatj+hatk` on `vecb=hati-2hatj+hatk` is equal to:

A

`(5sqrt(6))/(3)`

B

`(5)/(sqrt(6))`

C

`(6)/(sqrt(14))`

D

`(sqrt(6))/(5)`

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The correct Answer is:
B
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BETTER CHOICE PUBLICATION-VECTOR ALGEBRA -PREVIOUS YEARS BOARD.S QUESTIONS FOR PRACTICE (MCQ)
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  2. Area of a rectangle having vertices A, B, C and D with position vector...

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  3. The projection of veca=2hati-hatj+hatk on vecb=hati-2hatj+hatk is equa...

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  4. Find the projection of hati-hatj on the line represented by the vector...

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  5. For given vectors,veca=2hati-hatj+2hatk and vecb=-hati+hatj-hatk , fin...

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  6. Using vectors, prove that cos(alpha-beta)=cosalpha cosbeta+sinalphas...

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  7. With the help of vector method, prove that,cosA=(b^2+c^2-a^2)/(2bc)

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  8. Prove that, in any triangle ABC, cos B=(c^2+a^2-b^2)/(2ca).

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  9. Find vecaxxvecb, if veca=2hati+hatj+3hatk and vecb=3hati+5hatj-2hatk

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  10. Find |vecaxxvecb|, if veca=3hati+4hatjand vecb=hati-hatj+hatk

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  11. Find the unit vector perpendicular to the vector veca=-hati-2hatj+3h...

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  12. Find the unit vector perpendicular to the vector veca=4hati-3hatj-ha...

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  13. Using vector, prove that sin(A+B)=sinAcosB+cosAsinB

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  14. Find the area of a parallelogram whose adjacent sides are : 3hati-4h...

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  15. Find the area of a parallelogram whose adjacent sides are : 3hati+ha...

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  16. Find the area of parallelogram whose adjacent sides are given by vecto...

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  17. If veca+vecb+vecc=vec0, show that vecaxxvecb=veccxxveca. Interpret the...

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  18. veca=hati-2hatj+3hatk and vecb=2hati+3hatj-5hatk find vecaxxvecb and v...

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  19. Find the angle between two vectors veca and vecb with magnitudes sqrt3...

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  20. The magnitude of the vector 2hati-6hatj-3hatk is :

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