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If the vectors i +j , i - j and li + mj...

If the vectors i +j , i - j and li + mj + nk are coplanar, then:

A

I=m =n = 1

B

l=1 and m, n are any scalars

C

n=0 and l, m are any scalars

D

m=0, n = 1 and l are any scalar

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The correct Answer is:
C
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MARVEL PUBLICATION-VECTORS-TEST YOUR GRASP
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  3. If the origin is the centroid of a triangle ABC having vertices A(a ,1...

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  6. If vectors 2i-j+k,i+2j-3k and 3i+aj+5k are coplaner, then a=

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  7. If bara.i = 4, then bara.[j xx (2j - 3k)]=

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  9. If veca vecb are non zero and non collinear vectors, then [(veca, vecb...

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  10. If bara,barb,barc are non-coplaner vectors and barp=(barbxxbarc)/([bar...

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  11. If direction ratios of two lines are 2,-6,-3 and 4,3,-1 then directi...

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  12. If the volumes of parallelepiped with coterminus edges -pj+5k,i-j+qk a...

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  14. If the points with position vectors -i + 3j + 2k , -4i + 2j - 2k and 5...

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  15. If bara.barb=barb.barc=barc.bara=0 and bara,barb,barc form a right-han...

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  17. i · (j xx k) + j · (k xx i) + k · (i xx j ) =

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