The unit vector in the direction 6hati-2...

The unit vector in the direction `6hati-2hatj+3hatk` is ………….

A

`(6)/(7)hati+(2)/(7)hatj+(3)/(7)hatk`

B

`(6)/(7)hati-(2)/(7)hatj+(3)/(7)hatk`

C

`(-6)/(7)hati+(2)/(7)hatj+(3)/(7)hatk`

D

`(6)/(7)hati+(2)/(7)hatj-(3)/(7)hatk`

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The correct Answer is:

B

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KUMAR PRAKASHAN-VECTOR ALGEBRA -Solutions of NCERT Exemplar Problems (Multiple Choice Questions (MCQs) )

The unit vector in the direction of the sum of the vectors (1, 1, 1),(...
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The vector 2hati+2hatj-hatk makes ………………measure of angles with the axe...
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The unit vector in the direction 6hati-2hatj+3hatk is ………….
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The unit vector parallel to the vecotr bar(a)-bar(b) is ……………. where...
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If bar(a)=(1,1,1),bar(b)=(4,-2,3) and bar( c )=(1,-2,1) then the vect...
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The vector with magnitude 17sqrt(2) and in the opposite direction of (...
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Out of the following …………. Is the unit vector in the direction of (3ha...
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The position vector of the point P is (4, 5, -3). The distance of the ...
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The position vector of a point A is (4, 2, -3). If the distance of the...
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vec(a)=hati+hatj+hatk,vec(b)=hati-hatj+hatk and vec( c )=hati+2hatj-...
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A(1, 1, 2), B(4, 3, 1) and C(2, 3, 5) are vertices of a triangle ABC. ...
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The position vectors of two points A and B are respectively 6vec(a)+2v...
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The position vectors of the vertices of triangle are 3hati+4hatj+5hatk...
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The angle between the unit vectors vec(a) and vec(b) is 2theta. Where ...
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squareABCD is a parallelogram. (A(1)) and B(1) are midpoints of the si...
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In DeltaABC,vec(AB)=3hati+4hatk and vec(AC)=5hati-2hatj+4hatk. Length ...
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If bar(x)=(a,4,2a) and bar(y)=(2a,-1,a) are perpendicualr to each othe...
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If bar(x)=(3,1,0),bar(y)=(2,2,3),bar(z)=(-1,2,1). If bar(x)|(bar(y)+...
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If bar(x)=(1,2,4),bar(y)=(-1,-2,k),k ne -4 then |bar(x).bar(y)|………|bar...
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