Home
Class 11
MATHS
If veca +5vecb and 4veca+mvecbare parall...

If `veca +5vecb` and `4veca+mvecb`are parallel then m is :

A

25

B

20

C

4

D

none of the above

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • Vector Algebra -I

    PREMIERS PUBLISHERS|Exercise Solution to Exercise(8.5)|25 Videos

  • TWO DIMENSIONAL ANALYTICAL GEOMETRY

    PREMIERS PUBLISHERS|Exercise PROBLEM FOR PRACTICE (CHOOSE THE CORRECT OPTION)|28 Videos

Similar Questions

Explore conceptually related problems

If veca+2vecb and 3veca+mvecb are parallel, then the value of m is

If 2veca+6vecb and 3veca+mvecb are parallel then the vector of m is:

Vectors 3veca-5vecb and 2veca + vecb are mutually perpendicular. If veca + 4 vecb and vecb - veca are also mutually perpendicular, then the cosine of the angle between veca nad vecb is

If veca .vecb =beta and veca xx vecb = vecc ," then " vecb is

If |veca|=5 , |veca-vecb| = 8 and |veca +vecb|=10 then find |vecb|

If veca and vecb are parallel vector, then [(veca,vecb,vecc)] is equal to

If veca and vecb are non-zero, non parallel vectors, then the value of |veca + vecb+veca xx vecb|^(2) +|veca + vecb-veca xx vecb|^(2) equals

PREMIERS PUBLISHERS-Vector Algebra -I-Choose Correct Option
  1. Find the odd man out.

    Text Solution

    |

  2. Find which in suitable for the blank space given below:|veca.vecb|…….....

    Text Solution

    |

  3. Assertion If D is the midpoint of the side BC of a triangle ABC then v...

    Text Solution

    |

  4. Assertion If G is the centroid of the triangle ABC then vecGA+vecGB+v...

    Text Solution

    |

  5. Find (veci+vecj).{(vecj+veck) X (veck+veci)}:

    Text Solution

    |

  6. If veca +5vecb and 4veca+mvecbare parallel then m is :

    Text Solution

    |

  7. If the projection of veca on vecb and projection of vecb on veca ar...

    Text Solution

    |

  8. If 60^(@), 45^(@), alpha^(@)are the directional angles of a vector vec...

    Text Solution

    |

  9. If aplha, beta, gamma are the directional angles of a vector then sin^...

    Text Solution

    |

  10. If vecr=(5veca-3vecb)/2, then the point P whose position vector rdivid...

    Text Solution

    |

  11. The Position vectors of A,B,C are 3veci+2vecj-veck, 2veci+4vecj+5veck ...

    Text Solution

    |

  12. The projection of 2veci-vecj+2veck on veci+2vecj+2veck is :

    Text Solution

    |

  13. If vec a,vecb,vecc are sides of triangle taken in order then avec+bvec...

    Text Solution

    |

  14. If veca=xveci+vecj-veck,vecb=veci-vecj-veck,vecc=veci-2vecj+3veck and ...

    Text Solution

    |

  15. If the points where position vector 5veci+3vecj,2veci-vecj and xveci+3...

    Text Solution

    |

  16. If vecaand vecb are unit vector which are included at an angle of 360^...

    Text Solution

    |

  17. If veca and vecb are of equal magnitude and angle between them is 30^(...

    Text Solution

    |

  18. In a quadrilateral ABCD, vecAB+vecBC+ vecCD is:

    Text Solution

    |

  19. If the vectors 2veci+vecj-veck, veci+3vecj-4veck and -veci-4vecj+lambd...

    Text Solution

    |

  20. (i) dot product of two vectors is not commutative (ii) If veci,vecj,ve...

    Text Solution

    |