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If vecu=veca-vecb, vecv=veca+vecb and |v...

If ``vecu=veca-vecb, vecv=veca+vecb` and `|veca|=|vecb|=2`, then `|vecuxxvecc|` is equal to

A

`2sqrt(16 -(veca.vecb)^(2))`

B

`2sqrt(4-(veca.vecb)^(2))`

C

`sqrt(16-(veca.vecb)^(2))`

D

`sqrt(4-(veca.vecb)^(2))`

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The correct Answer is:
A
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VMC MODULES ENGLISH-VECTORS -LEVEL -1
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  2. If |veca|=4, |vecb|=4 and |vecc|=5 such that veca bot vecb + vecc, vec...

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  3. If vecu=veca-vecb, vecv=veca+vecb and |veca|=|vecb|=2, then |vecuxxvec...

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  4. If the vectors vecc, \ veca=xhati+yhatj+zhatk and vecb=hatj are such ...

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  5. Given any vector, vecr,|vecr xx hati|^(2) + |vecr xx hatj|^(2) + |vecr...

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  6. The value of x fot which the angle between the vectors a=-3hat(i)+xhat...

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  7. If a,b and c are non-coplanar vectors and lamda is a real number, then...

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  8. Let vecb and vecc be non-collinear vectors. If veca is a vector such t...

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  9. Let O be the centre of a regular pentagon ABCDE and vec(OA) = veca, th...

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  10. If vecr=x(vecaxxvecb)+y(vecbxxvecc)+z(veccxxveca) and [veca vecb v...

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  11. if veca , vecb and vecc are three non-zero, non- coplanar vectors and ...

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  12. Let veca=veci-veck,vecb=xveci+vecj+(1-x)veck and vecc=yveci+xvecj+(1+x...

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  13. Let veca, vecb and vecc be three units vectors such that 3veca + 4vecb...

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  14. The value of x for which the angle between veca=2x^(2)hati+4xhatj + ha...

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  15. Given three vectors veca=6hati-3hatj,vecb=2hati-6hatj and vecc=-2hati+...

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  16. If vecalpha+ vecbeta+ vecgamma=a vecdeltaa n d vecbeta+ vecgamma+ vec...

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  17. If unit vector vecc makes an angle pi/3 with hati + hatj, then minimum...

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  19. For non-zero vectors veca, vecb and vecc , |(veca xx vecb) .vecc| = |v...

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  20. If veca + 2 vecb + 3 vecc = vec0 " then " veca xx vecb + vecb xx vecc...

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