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Let ` vec u , vec v` and `vec w` be vectors such that ` vec u+ vec v+ vec w=0.` If `| vec u|=3,| vec v|=4` and `| vec w|=5,` then ` vec u. vec v+ vec v.vec w+ vec w.vec u` is a.`47` b. `-25` c. `0` d. `25`

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  2. If vec a , vec b and vec c are non-coplanar unit vectors such that ...

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  3. Let vec u , vec v and vec w be vectors such that vec u+ vec v+ vec w...

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  4. If vec a , vec b and vec c are three non-coplanar vectors, then ( v...

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  5. Let vec pa n d vec q be any two orthogonal vectors of equal magnitu...

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  7. Find a unit vector perpendicular to each of the vectors ( vec a+ vec...

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  8. Consider three vectors vec a , vec b and vec c Statement 1 vec axx...

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  9. Column I, Column II The possible value of vec a if vec r=( hat i+ ha...

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  14. Statement 1 : Points A(1,0),B(2,3),C(5,3),a n dD(6,0) are concyclic. S...

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  15. Let vec r be a non-zero vector satisfying vec r dot vec a= vec rdo...

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  16. Let vec a = a1 hat i + a2 hat j+ a3 hat k;vec b = b1 hat i+ b2 hat j+...

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  18. If vec a\ a n d\ vec b\ a n d\ vec c are mutually perpendicular uni...

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