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If veca*veca=0andveca*vecb=0 , then what...

If `veca*veca=0andveca*vecb=0` , then what can be concluded about the vector `vecb`?

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The correct Answer is:
Vector `vecb` can be any vector
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NCERT BANGLISH-VECTOR ALGEBRA-EXERCISE 10.3
  1. Find the angle between two vectors vecaandvecb with magnitudes sqrt(3)...

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  2. Find the angle between the vectors hati-2hatj+3hatkand3hati-2hatj+hatk

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  3. Find the projection of the vector hati-hatj on the vector 7hati+hatj.

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  4. Find the projection of the vector hati+3hatj+7hatk on the vector 7hati...

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  5. Show that each of the given three vectors is a unit vector. (1)/(7)(2h...

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  6. Find |veca|and|vecb|, if (veca+vecb)*(veca-vecb)=8and|veca|=8|vecb|.

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  7. Evaluate the product (3veca-5vecb)*(2veca+7vecb).

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  8. Find the magnitude of two vectors vecaandvecb , having the same magni...

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  9. Find |vecx|, if for a unit vector veca,(vecx-veca)*(vecx+veca)=12.

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  10. If veca=2hati+2hatj+3hatk,vecb=-hati+2hatj+hatkandvecc=3hati+hatj are...

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  11. Show that |veca|vecb+|vecb|veca is perpendicular to |veca|vecb-|vecb|...

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  12. If veca*veca=0andveca*vecb=0 , then what can be concluded about the ve...

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  13. If veca,vecb,vecc are unit vectors such that veca+vecb+vecc=vec0 , fin...

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  14. If either vector veca=vec0orvecb=vec0, , then veca*vecb=0. But the c...

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  15. If either vector A,B,C of a triangle ABC are (1,2,3),(-1,0,0),(0,1,2)...

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  16. Show that the points A(1,2,7),B(2,6,3) and C(3,10,-1) are collinear.

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  17. Show that the vectors 2hati-hatj+hatk,hati-3hatj-5hatkand3hati-4hatk f...

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  18. If veca is a nonzero vector of mangitude 'a' and lambda a nonzero scal...

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