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vec(P)+vec(Q) is a unit vector along x-a...

`vec(P)+vec(Q)` is a unit vector along x-axis. If `vec(P)= hat(i)-hat(j)+hat(k)`, then what is `vec(Q)`?

A

`hat(i)+hat(j)-hat(k)`

B

`hat(j)-hat(k)`

C

`hat(i)+hat(j)+hat(k)`

D

`hat(j)+hat(k)`

Text Solution

Verified by Experts

The correct Answer is:
B
(b) Given `P+1=hat(i)-hat(j)+hat(k)`
and `P+Q=hat(i)-hat(i)+hat(j)+hat(k)=hat(j)-hat(k)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SCALARS AND VECTORS -Exercise 1
  1. If P+Q=0. Then which of the following is necessarily ture?

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  2. Two vector having magnitude 8 and 10 can maximum and minium value of m...

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  3. vec(P)+vec(Q) is a unit vector along x-axis. If vec(P)= hat(i)-hat(j)+...

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  4. For the resultant of two vectors to be maximum , what must be the ...

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  5. What are minmum number or unequal fores whose vector sum is zero ?

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  6. Given that P+Q+R=0. Which of the following statement is true?

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  7. A=2hat(i)+hat(j),B+3hat(j)-hat(k)and C=6hat(i)-2hat(k) Value of A-2B+3...

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  8. if P+Q+P-Q ,then

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  9. What vector must be added to the sum of two vectors 2hat(i)-hat(j)+3ha...

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  10. If |A|=2 and |B|=4 and angle between then is 60^(@) then |A-B|

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  11. If A and B are two vectors such that |A+B|=2|A-B|. The angle between v...

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  12. At what angle should the two forces 2P and sqrt(2P) and Psqrt(2)P act...

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  13. Three forces acting on a boby are shown in the figure. To have the re...

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  14. Three vector A,B and C satisfy the relation A.B=0 and A. C =0. Then t...

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  15. what is the dot product of two vectors of magnitudes 3 and 5,if angle ...

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  16. When A.B =-|A||B|, then

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  17. The condition (a.b)^(2)=a^(2)b^(2) is satisfied when

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  18. The modulus of the vector product of two vectors is (1)/(sqrt(30)) tim...

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  19. In a clockwise system,

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  20. If |AxxB| = sqrt3 A.B, then the value of |A+B| is

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