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A vector is represented by 3hati+2hatj+2...

A vector is represented by `3hati+2hatj+2hatk`. Its length in `XY` plane is

A

2

B

`sqrt(13)`

C

`sqrt(10)`

D

`sqrt(5)`

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The correct Answer is:
B
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ERRORLESS -VECTORS-Exercise
  1. The angle made by the vector vecA=2hati+3hatj with Y-axis is

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  2. The unit vector along hati+hatj is

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  3. A vector is represented by 3hati+2hatj+2hatk. Its length in XY plane i...

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  4. Five equal forces of 10 N each are applied at one point and all are ly...

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  5. Set the angles made by following vectors with x-axis in the increasing...

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  6. Any vector in an arbitrary direction can always be replaced by two (or...

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  7. Angular moment is

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  8. Which of the following is a vector

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  9. If vecP= vecQ then which of the following is NOT correct?

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  10. The positoin vector of a particle is vecr=(acos omegat)hati+(asinomega...

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  11. Which of the following is a scalar quantity

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  12. If a unit vector is represented by 0.5hati + 0.8hatj + chatk the value...

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  13. A boy walks uniformly along the sides of a rectangular park of size 40...

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  14. The unit vector parallel to the resultant of the vectors vecA=4hati+3h...

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  15. Surface area is

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  16. With respect to a rectangular Cartesian coordinate system, three vecto...

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  17. The angles between the two vectors vecA=3hati+4hatj+5hatk and vecB=3ha...

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  18. The position vector of a particle is given by vecr=(3t^(2)hati+4t^(2)h...

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  19. Unit vector parallel to the resultant of vectors A = 4hati - 3hatj and...

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  20. The component of vector A=2hati+3hatj along the vector hati+hatj is

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