Home
Class 11
PHYSICS
Deduce the condition for the vectors 2ha...

Deduce the condition for the vectors `2hati + 3hatj - 4hatk and 3hati - alpha hatj + bhatk` to be parallel.

Text Solution

Verified by Experts

The correct Answer is:
A, B, D
Ratio of their coefficients should be same.
`:. (2)/(3) = (3)/(-alpha) = (-4)/(b)`
`:. a = - 4.5`
and b =- 6.
Promotional Banner

Topper's Solved these Questions

  • VECTORS

    DC PANDEY|Exercise Example|39 Videos

  • VECTORS

    DC PANDEY|Exercise check point 2.1|15 Videos

  • VECTORS

    DC PANDEY|Exercise Single Correct|39 Videos

  • UNITS, DIMENSIONS & ERROR ANALYSIS

    DC PANDEY|Exercise Medical entrances gallery|32 Videos

  • WAVE MOTION

    DC PANDEY|Exercise Integer Type Question|11 Videos

Similar Questions

Explore conceptually related problems

Find the value of a for which the vectors 3 hati + 3hatj + 9 hatk and hati + a hatj +3 hatk are parallel.

Show that vectors 2hati-3hatj+4hatk and -4hati+6hatj-8hatk are parallel

The angle between the two vectors -2hati+3hatj-hatk and hati+2hatj+4hatk is

Find the sum of the vectors veca = -2hati+hatj-4hatk and vecb = 3hati-hatj+5hatk .

Find the angle between the vectors 4hati-2hatj+4hatk and 3hati-6hatj-2hatk.

Find the value of lamda so that the two vectors 2hati+3hatj-hatk and -4hati-6hatj+lamda hatk are parallel

A unit vector perpendicular to both the vectors 2hati-2hatj+hatk and 3hati+4hatj-5hatk , is

Show that the vectors 2hati-3hatj+4hatk and -4hati+6hatj-8hatk are collinear.

Show that the vectors 2hati -3hatj+4hatk and -4hati+6hatj-8hatk are collinear.

DC PANDEY-VECTORS-Subjective
  1. The work done by a force vecF during a displacement vecr is given by v...

    Text Solution

    |

  2. If vecA,vecB,vecC are mutually perpendicular show that vecCxx(vecAxxve...

    Text Solution

    |

  3. Prove that vecA.(vecAxxvecB)=0

    Text Solution

    |

  4. Find the resultant of the three vectors shown in figure (2W1). .

    Text Solution

    |

  5. Given an example for which vecA.vecB=vecC.vecB but vecA!=vecC.

    Text Solution

    |

  6. Obtain the angle between A+B and A-B if A = 2hati +3hatj and B = hati ...

    Text Solution

    |

  7. Deduce the condition for the vectors 2hati + 3hatj - 4hatk and 3hati -...

    Text Solution

    |

  8. Find the area of the parallelogram whose sides are represented by 2hat...

    Text Solution

    |

  9. If vectors A and B be respectively equal to 3hati - 4hatj + 5hatk and ...

    Text Solution

    |

  10. if A = 2hati - 3hatj+7hatk, B = hati + 2hatj and C=hatj - hatk. Find A...

    Text Solution

    |

  11. The x and y-components of vector A are 4 m and 6 m respectively. The x...

    Text Solution

    |

  12. Three vectors which are coplanar with respect to a certain rectangular...

    Text Solution

    |

  13. Let vecA and vecB be the two vectors of magnitude 10 unit each. If the...

    Text Solution

    |

  14. The resultant of vectors vec(OA) and vec(OB) is peerpendicular to vec(...

    Text Solution

    |

  15. Find the components of a vector A = 2hati + 3hatj along the direction...

    Text Solution

    |

  16. If two vectors are A = 2hati + hatj - hatk and B = hatj - 4hatk. By ca...

    Text Solution

    |

  17. The resultant of two vector A and B is at right angles to A and its ma...

    Text Solution

    |

  18. Four forces of magnitude P, 2P, 3P and 4P act along the four sides of ...

    Text Solution

    |

  19. If P + Q = R and P - Q = S, prove that R^2 + S^2 = 2(P^2 + Q^2)

    Text Solution

    |

  20. In an Delta ABC as showin in Fig. 2 . (2) .71 (a) prove that a/(sin...

    Text Solution

    |