Home
Class 12
MATHS
If vec a=2hati+3hatj-hatk, then |vec a| ...

If `vec a=2hati+3hatj-hatk`, then `|vec a|` is :

A

`sqrt(15)`

B

`sqrt(14)`

C

14

D

15

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • PUNJAB BOARD - MATHEMATICS 2019

    OMEGA PUBLICATION|Exercise SERIES-C|58 Videos

  • PUNJAB BOARD - MATHEMATICS 2019

    OMEGA PUBLICATION|Exercise SERIES-B |58 Videos

  • PROBABILITY

    OMEGA PUBLICATION|Exercise Multiple Choice Questions (MCQs)|38 Videos

  • PUNJAB BOARD-MATHEMATICS 2018

    OMEGA PUBLICATION|Exercise SERIES -C|19 Videos

Similar Questions

Explore conceptually related problems

If veca=2hati+hatj+7hatk and vecb=5hati-3hatj+10hatk , then veca*vecb is :

If veca=2hati+3hatj-5hatk and vecb=hati+hatj-hatk , then veca*vecb is :

If veca=2hati+3hatj-5hatk and vecb=hati+hatj-hatk , then veca*vecb is :

If veca=3hati-hatj+2hatk and vecb=2hati+3hatj+3hatk then veca.vecb is equal to :

If veca=2hati+ 3hatj-5hatk,vecb =m hati+nhatj +12 hatk and veca xx vecb = vec0 then find (m,n)

If veca = hati-hatj+hatk , vecb = 2hati-3hatj+hatk , then find |2vecaxxvecb|

OMEGA PUBLICATION-PUNJAB BOARD - MATHEMATICS 2019-SERIES-C (MCQ)
  1. Degree of differentiate equation (d^(2)y)/(dx^(2))+((dy)/(dx))^(3)+y=0...

    Text Solution

    |

  2. If vec a=2hati+3hatj-hatk, then |vec a| is :

    Text Solution

    |

  3. Direction ratios of normal to plane which is parallel to the plane 3x ...

    Text Solution

    |

  4. If E and F are independent events, P(E)=1/(2)andP(F)=1/(3) then P(EnnF...

    Text Solution

    |

  5. If y= log (tan x), then dy/dx is:

    Text Solution

    |

  6. If A is a square matrix of order 3xx3 and abs(A) = 5 then abs (Adj. A)...

    Text Solution

    |

  7. The principal value of "sin"^(-1)(-1/(2)) is

    Text Solution

    |

  8. If f(x) = {((x^2-9)/(x-3),,x,ne,3),(m,,x,=,3):} is continuous at x = 3...

    Text Solution

    |

  9. If y= log (tan x), then dy/dx is:

    Text Solution

    |

  10. Evaluate the following integrals: underset(0)overset(pi//2)int(sin^(...

    Text Solution

    |

  11. Degree of differentiate equation (d^(2)y)/(dx^(2))+((dy)/(dx))^(3)+y=0...

    Text Solution

    |

  12. If vec a=2hati+3hatj-hatk, then |vec a| is :

    Text Solution

    |

  13. Direction ratios of normal to plane which is parallel to the plane 3x ...

    Text Solution

    |

  14. If E and F are independent events, P(E)=1/(2)andP(F)=1/(3) then P(EnnF...

    Text Solution

    |

  15. If y= log (tan x), then dy/dx is:

    Text Solution

    |

  16. If A is a square matrix of order 3xx3 and abs(A) = 5 then abs (Adj. A)...

    Text Solution

    |

  17. The Principal value of sin^- 1 (1/2) is

    Text Solution

    |

  18. If f(x) = {((x^2-9)/(x-3),,x,ne,3),(m,,x,=,3):} is continuous at x = 3...

    Text Solution

    |

  19. If y= log (tan x), then dy/dx is:

    Text Solution

    |

  20. Evaluate the following integrals: underset(0)overset(pi//2)int(sin^(...

    Text Solution

    |