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The angle between the vectors (hati+hatj...

The angle between the vectors `(hati+hatj)` and `(hatj+hatk)` is

A

`90^(@)`

B

`180^(@)`

C

`0^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
`cos theta= (0+1+ 0)/(sqrt(2)sqrt(2)) = (1)/(2)`
` theta = cos^(-1) .(1)/(2) = 60^(@)`
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GRB PUBLICATION-VECTORS-OBJECTIVE QUESTIONS
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  8. The angle made by the vector 4hati - 3hatj + 5hatk with z-axis is :

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  10. The resultant of two forces , one double the other in magnitude is pe...

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  11. The value of n so that vectors 2hati+3hatj-2hatk, 5hati+nhatj+hatk and...

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  12. A projectile of mass m is fired with a velocity v from point P at an a...

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  14. Two forces of magnitudes 30, 60 and P newton acting at a point a...

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  15. A force F=ahati+bhatj+chatk is acted upon a body of mass m. If the bod...

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  16. Let vecF be a force acting on a particle having positon vector vecr. L...

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  17. If |vecA xx vecB| = sqrt(3) vecA .vecB then the value of |vecA xx ve...

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  18. vecA, vecB and vecC are vectosrs each having a unit magneitude. If ...

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  19. Three forces act on a body. The body will certainly have an accele...

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  20. If the sum and difference of two vectors are at right angles, show tha...

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