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bar(b)=3hatj+4hatk,bar(a)=hati+hatj. If ...

`bar(b)=3hatj+4hatk,bar(a)=hati+hatj`. If `bar(b_(1))` and `bar(b_(2))` are component of `bar(b)` and `bar(b_(1))=(3)/(2)hati+(3)/(2)hatj,bar(b_(2))` is perpendicualr to `bar(a)` then `bar(b_(2))` = ………………..

A

`(3)/(2)hati+(3)/(2)hatj+4hatk`

B

`-(3)/(2)hati+(3)/(2)hatj+4hatk`

C

`-(3)/(2)hati+(3)/(2)hatj`

D

None of these

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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) )
  1. For unit vectors bar(a) and bar(b), if bar(a)+2bar(b) and 5bar(a)-4bar...

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  2. bar(a)=2bar(i)-3bar(j)+6bar(k) and bar(b)=-2bar(i)+2bar(j)-bar(k) then...

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  3. bar(b)=3hatj+4hatk,bar(a)=hati+hatj. If bar(b(1)) and bar(b(2)) are co...

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  4. The unit vector bar(a) and bar(b) are perpendicualr to each other. The...

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  5. Vector bar(a)=6hati-3hatj,bar(b)=2hati-6hatj and bar( c )=-2hati+21hat...

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  6. bar(a),bar(b) and bar( c ) are unit vectors. The value of |bar(a)-bar(...

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  7. If bar(a),bar(b) and bar( c ) are perpendicualr to bar(b)+bar( c ),bar...

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  8. bar(a) and bar(b) are unit vectors. |bar(a)+bar(b)|=sqrt(3) then the v...

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  9. DeltaABC is an equilateral triangle. Its side is l. Any point P lies o...

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  10. vec(a)=2hati+hatj+hatk and vec(b)=hati-hatj-hatk are the adjacent side...

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  11. The position vectors of four points A, B, C and D in the plane are vec...

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  12. If vec(alpha)=(1)/(a)hati+(4)/(b)hatj+b hatk and vec(beta)=b hati+a ha...

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  13. The unit vectors vec(a),vec(b) and vec( c ) are not coplanar. If vec(a...

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  14. If vec(x)+vec(y)+vec(z)=0 and |vec(x)|=|vec(y)|=|vec(z)|=2 If the angl...

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  15. vec(a)=2hati-hatj+hatk,vec(b)=hati+2hatj-hatk,vec( c )=hati+hatj-2hatk...

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  16. vec(a)=hati+hatj+sqrt(2)hatk,vec(b)=b(1)hati+b(2)hatj+sqrt(2)hatk and ...

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  17. vec(a)=2hati+lambda(1)hatj+3hatk,vec(b)=4hati+(3-lambda(2))hatj+6hatk ...

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  18. squareABCD is a parallelogram vec(AB)=bar(q),vec(AD)=bar(p),angleBAC i...

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  19. The position vectors of A, B and C are 2hati-hatj+hatk,hati-3hatj-5hat...

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  20. A particle is acted upon constant forces vec(F)(1)=4hati+hatj-3hatk an...

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