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A unit vector perpendicular to the vect...

A unit vector perpendicular to the vector `-bar(i)+2bar(j)+2bar(k)` and making equal angles with x and y- axis can be

A

`pm (1)/(3) (2i+2j-k)`

B

`pm(1)/(3)(i+j-k)`

C

`pm(1)/(3)(2i-2j-k)`

D

none of these

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A
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ML KHANNA-ADDITION AND MULTIPLICATION OF VECTORS -Problem Set (2) (MULTIPLE CHOICE QUESTIONS)
  1. Let A,B and C be the unit vectors . Suppose that A.B=A.C =0 and the a...

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  2. Let vec(u) = hat(i) + hat(j), vec(v) = hat(i) - hat(j) and vec(w) = h...

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  3. A unit vector perpendicular to the vector -bar(i)+2bar(j)+2bar(k) and...

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  4. The vectors a, b and c are of the same length and taken pairwise, they...

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  5. The vector a, b, c are equal in length and taken pairwise they mak equ...

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  6. The vector r satisfying the conditions that I. it is perrpendicular ...

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  7. The values of lambda for which the angle between the vectors a= lambd...

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  8. If a and b are two unit vectors inclined at an angle 2theta to each ot...

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  9. The vectors (2hati - mhatj+ 3mk) and {(1 + m) hati -2m hatj + hatk} i...

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  10. If the vectors a = (2, log(3)x,lambda) and b = (-3,lambdalog(3) x, log...

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  11. The set of values of lambda for which the vectors vec a=(lambda(log)2...

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  12. The values of x for which the angle between the vectors veca =xhati -...

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  13. The vectors a = 2lambda^(2) i+4lambdaj+k and b=7i-2j+lambdak make an o...

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  14. If unit vectors veca and vecb are inclined at an angle 2 theta such th...

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  15. Lelt two non collinear unit vectors hata and hatb form and acute angle...

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  16. For any vector veca |veca xx hati|^(2) + |veca xx hatj|^(2) + |vec...

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  17. If |a| = |b|, then (a +b). (a-b) is

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  18. A vector a has components 2p and 1 with respect to a rectangular cart...

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  19. Let a =i+j+pk and b=i+j+k, |a+b| =|a| +|b| , holds for

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  20. If x and y are two unit vectors and phi is the angle between them, the...

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