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The angle between the vectors hat i -hat...

The angle between the vectors `hat i -hat j` and ` hat j - hat k` is

A

`(pi)/(3)`

B

`(2pi)/(3)`

C

`-(pi)/(3)`

D

`(5pi)/(6)`

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The correct Answer is:
B
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MODERN PUBLICATION-VECTOR ALGEBRA -Objective Type Questions (A. Multiple Choice Questions)
  1. The magnitude of the vector 6hat(i)+2hat(j)+3hat(k) is :

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  2. The vector with initial point P(2,-3,5) and terminal point Q(3,-4,7) i...

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  3. The angle between the vectors hat i -hat j and hat j - hat k is

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  4. The value of 'lambda' for which the two vectors : 2hat(i)-hat(j)+2hat(...

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  5. If (2hat(i)+6hat(j)+ 27hat(k))xx(hat(i)+phat(j)+qhat(k))=vec(0), then ...

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  6. If vec(a)=2hat(i)+3hat(j)-hat(k), then |vec(a)| is :

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  7. Write the value of hat(i).(hat(j)xxhat(k))+hat(j).(hat(i)xxhat(k))+ha...

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  8. For mutually perpendicular unit vectors hat(i), hat(j), hat(k), we hav...

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  9. Direction - ratios of vector vec(a)=hat(i)+hat(j)-2hat(k) are :

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  10. If vec(a)=hat(i)+2hat(j), then |vec(a)| is :

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  11. Direction - cosines of vec(a)=hat(i)+hat(j)-2hat(k) are :

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  12. If p hat(i)+3hat(j) is a vector of magnitude 5, then the value of p is...

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  13. If is the angle between any two vectors vec a and vec b , t...

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  14. The inequality |vec(a).vec(b)|le |vec(a)||vec(b)| is called :

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  15. The vectors vec(a) and vec(b) are perpendicular if :

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  16. Find the angle between two vectors vec a and vec b with magnitudes 1 a...

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  17. Find | vec a- vec b|,\ if:| vec a|=2,\ | vec b|=3\ a n d\ vec adot ve...

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  18. The angle between the vectors : vec(a)=hat(i)+2hat(j)-3hat(k) and 3...

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  19. The D.C.'s of the vector hat(i)+2hat(j)+3hat(k) are :

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  20. If vec(a)=2hat(i)+2hat(j)+3hat(k), then its magnitude is :

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