Home
Class 12
MATHS
If |bar(u)| = sqrt(3) and bar(u) is equ...

If `|bar(u)| = sqrt(3) and bar(u)` is equally inclined to co - ordinate axes, then vector `bar(u)` =

A

`i-j-k`

B

`i-j+k`

C

`i+j-k`

D

`i+j+k`

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • THREE DIMENSIONAL GEOMETRY

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|39 Videos

  • PLANE IN SPACE

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP- CHAPTERS 6,7,22|1 Videos

  • TRIGONOMETRIC FUNCTIONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP: CHAPTER 3-3.3|13 Videos

Similar Questions

Explore conceptually related problems

If |bar r|=9 and bar r is equally inclined to the co-ordinate axes, then bar r=

If bar(a),b&bar(c) are three vectors such that, |bar(a)|=3,|bar(b)|=4&|bar(c)|=sqrt(24) and sum of any two vectors is orthogonal to the third vector, then |bar(a)+bar(b)+bar(c)| is equal to

If |bar(u)|=2 and bar(u) makes angles of 60^(@) and 120^(@) with OX and OY respectively , then vector bar(u)=

If |vec a|=2,|vec b|=sqrt(3) and (bar(a),bar(b))=30^(@) then the angle between the vectors bar(b) and bar(a)-bar(b) is

Let bar(a),bar(b) be two non zero vectors such that vectors 3bar(a)-5bar(b) and 2bar(a)+bar(b) are mutually perpendicular. If bar(a)+4bar(b) and bar(b)-bar(a) are also mutually perpendicular then the cosine angle between bar(a) and bar(b) is

Suppose bar(a), bar(b), bar(c) be three unit vectors such that |bar(a)-bar(b)|^(2)+|bar(b)-bar(c)|^(2)+|bar(c)-bar(a)|^(2) is equal to 3 . If bar(a), bar(b), bar(c) are equally inclined to each other at an angle:

Let bar(a),bar(b) and bar(c) be three non-zero vectors,no two of which are collinear.If the vectors bar(a)+2bar(b) is collinear with bar(c) and bar(b)+3bar(c) is collinear with bar(a), then bar(a)+2bar(b)+6bar(c) is equal to

Let the vectors bar(a),bar(b),bar(c) be such that |bar(a)|=2,|bar(b)|=4 and |bar(c)|=4 . If the projection of bar(b) on bar(a) is equal to the projection of bar(c) on bar(a) and bar(b) is perpendicular to bar(c) ,then the value of |bar(a)+bar(b)-bar(c)| is

Let the vectors bar(a),bar(b),bar(c) be such that |bar(a)|=2,|bar(b)|=4 and |bar(c)|=4 . If the projection of bar(b) on bar(a) on is equal to the projection of bar(c) on bar(a) and bar(b) is perpendicular to bar(c) then the value of |bar(a)+bar(b)-bar(c)| is

bar(a),bar(b),bar(c) are three vectors such that |bar(a)|=1,|bar(b)|=2,|bar(c)|=3 and bar(b),bar(c) are perpendicular to each other.If the projection of bar(b) along bar(a) is same as that of bar(c) along bar(a) then |bar(a)-bar(b)+bar(c)| is equal to

MARVEL PUBLICATION-THREE DIMENSIONAL GEOMETRY-MULTIPLE CHOICE QUESTIONS
  1. Given P = (3,-6,10)and PQ = sqrt(17) . If direction cosines of line PQ...

    Text Solution

    |

  2. If l,m,n are direction cosines of a line , then vector li +mj+nk is a

    Text Solution

    |

  3. If |bar(u)| = sqrt(3) and bar(u) is equally inclined to co - ordinate...

    Text Solution

    |

  4. If |bar(u)|=2 and bar(u) makes angles of 60^(@) and 120^(@) with OX a...

    Text Solution

    |

  5. If a line makes angles theta(1), theta(2), theta(3) with the coordinat...

    Text Solution

    |

  6. Find the angle between the lines whose direction ratios are: 2,-3,4 ...

    Text Solution

    |

  7. If bar(a),bar(b),bar (c ) are pair wise mutually perpendicular vectors...

    Text Solution

    |

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

    Text Solution

    |

  9. A line makes 45^(@) with OX and equal angles with OY and OZ .Then the ...

    Text Solution

    |

  10. What is the angle between the two lines whose direction numbers are (s...

    Text Solution

    |

  11. If the line of the vector bar (r ) = lambda I + 2j - k makes angles a...

    Text Solution

    |

  12. The number of lines which are equally inclined to the axes is :

    Text Solution

    |

  13. The projection of the line segment joining the points A(-1,0,3) and B(...

    Text Solution

    |

  14. Direction Cosines of a normal to the XOY - plane are

    Text Solution

    |

  15. If the direction cosines of a line are 1/c,1/c,1/c rthen (A) c.0 (B) 0...

    Text Solution

    |

  16. A mirror and a source of light are situated at the origin O and at a...

    Text Solution

    |

  17. The direction Cosines of two lines at right angles are l(1),m(1),n(1)a...

    Text Solution

    |

  18. The graph of the equation x^2+y^2=0 in the three dimensional space is ...

    Text Solution

    |

  19. If the line OP of length r makes an angle alpha with the X - axis , an...

    Text Solution

    |

  20. l = m = n = 1 are the direction Cosines of

    Text Solution

    |