Home
Class 12
MATHS
If |bar(a)|=10,|bar(b)|=2 and bar(a).bar...

If `|bar(a)|=10,|bar(b)|=2` and `bar(a).bar(b)=12` then the value of `|bar(a)xx bar(b)|` is …………

A

5

B

10

C

14

D

16

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (True/False)|5 Videos

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Multiple Choice Questions (MCQs) )|171 Videos

  • VECTOR ALGEBRA

    KUMAR PRAKASHAN|Exercise Solutions of NCERT Exemplar Problems (Short Answer Type Questions)|17 Videos

  • THREE DIMENSIONAL GEOMETRY

    KUMAR PRAKASHAN|Exercise PRACTICE PAPER -11|16 Videos

Similar Questions

Explore conceptually related problems

If |bar(a).bar(b)|=3 and |bar(a)xx bar(b)|=4 then the angle between bar(a) and bar(b) is ………………

(bar(a)xx bar(b))^(2) = ……………..

If bar(a),bar(b) and bar( c ) are three vectors such that bar(a)+bar(b)+bar( c )=bar(0) and |bar(a)|=2,|bar(b)|=3 and |bar( c )|=5 , then the value of bar(a).bar(b)+bar(b).bar( c )+bar( c ).bar(a) is ………..

If |bar(a)+bar(b)|=|bar(a)-bar(b)| , then the vectors bar(a) and bar(b) are orthogonal.

The projection vector of bar(a) on bar(b) is ………….

If |bar(x)|=|bar(y)|=2 and (bar(x)" "^(hat)bar(y))=theta then |bar(x)-bar(y)cos theta| = ………..

If |bar(x).bar(y)|=cos alpha , then |bar(x)xx bar(y)| = …………….

bar(a) and bar(b) are unit vectors. |bar(a)+bar(b)|=sqrt(3) then the value of (3bar(a)-4bar(b)).(2bar(a)+5bar(b)) = ……………

If |bar(a)xx bar(b)|^(2)+|bar(a).bar(b)|^(2)=144 and |bar(a)|=4 , then |bar(b)| is equal to ……………….

KUMAR PRAKASHAN-VECTOR ALGEBRA -Solutions of NCERT Exemplar Problems (Objective type Questions)
  1. The angle between two vectors a and b with magnitudes sqrt(3) and 4, r...

    Text Solution

    |

  2. Find the value of lambda such that the vectors bar(a)=2bar(i)+lambda b...

    Text Solution

    |

  3. The value of lambda for which the vectors 3bar(i)-6bar(j)+bar(k) and 2...

    Text Solution

    |

  4. The vectors from origin to the points A and B are bar(a)=2bar(i)-3bar(...

    Text Solution

    |

  5. bar(a)=2bar(i)-3bar(j)+2bar(k) and bar(b)=2bar(i)+3bar(j)+bar(k) are t...

    Text Solution

    |

  6. For any vector bar(a), the value of (bar(a)xx i)^(2)+(bar(a)xx j)^(2)+...

    Text Solution

    |

  7. If |bar(a)|=10,|bar(b)|=2 and bar(a).bar(b)=12 then the value of |bar(...

    Text Solution

    |

  8. The vectors lambda bar(i)+bar(j)+2bar(k),bar(i)+lambda bar(j)-bar(k) a...

    Text Solution

    |

  9. If bar(a),bar(b) and bar( c ) are unit vectors such that bar(a)+bar(b)...

    Text Solution

    |

  10. The projection vector of bar(a) on bar(b) is ………….

    Text Solution

    |

  11. If bar(a),bar(b) and bar( c ) are three vectors such that bar(a)+bar(b...

    Text Solution

    |

  12. If |bar(a)|=4 and -3le lambda le 2, then the range of |lambda. bar(a)|...

    Text Solution

    |

  13. The number of vectors of unit length perpendicular to the vectors bar(...

    Text Solution

    |

  14. The vector (bar(a)+bar(b)) bisects the angle between the non-collinear...

    Text Solution

    |

  15. If bar( r ).bar(a)=0,bar( r ).bar(b)=0 and bar( r ).bar( c )=0 for som...

    Text Solution

    |

  16. The vectors bar(a)=3bar(i)-2bar(j)+2bar(k) and bar(b)=-bar(i)-2bar(k) ...

    Text Solution

    |

  17. The values of k, for which |k.bar(a)|lt |bar(a)| and k.bar(a)+(1)/(2)b...

    Text Solution

    |

  18. The value of the expression |bar(a)xx bar(b)|^(2)+(bar(a).bar(b))^(2) ...

    Text Solution

    |

  19. If |bar(a)xx bar(b)|^(2)+|bar(a).bar(b)|^(2)=144 and |bar(a)|=4, then ...

    Text Solution

    |

  20. If bar(a) is any non-zero vector, then (bar(a).bar(i)).bar(i)+(bar(a...

    Text Solution

    |