Home
Class 11
PHYSICS
If vecP.vecQ=PQ then angle between vecP ...

If `vecP.vecQ=PQ` then angle between `vecP` and `vecQ` is

A

`0^(@)`

B

`30^(@)`

C

`45^(@)`

D

`60^(@)`

Text Solution

Verified by Experts

The correct Answer is:
1
`vecP*vecQ = PQ`
`rArr PQ cos theta = PQ`
`rArr cos theta = 1 rArr theta = 0 ^(@)`
Promotional Banner

Topper's Solved these Questions

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise CROSS PRODUCT|15 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise EXERCISE-II AIPMT/NEET & AIIMS (2006- 2018)|6 Videos

  • BASIC MATHEMATICS USED IN PHYSICS &VECTORS

    ALLEN|Exercise RESOLUTION OF VECTOR|8 Videos

  • CENTRE OF MASS

    ALLEN|Exercise EXERCISE-V B|19 Videos

Similar Questions

Explore conceptually related problems

The vectors vecP and vecQ have equal magnitudes of vecP +vecQ is n times the magnitude of vecP-vecQ , then angle between vecP and vecQ is:

If |vecP + vecQ| = |vecP -vecQ| the angle between vecP and vecQ is

If vectors vecP,vecQ and vecR have magnitude 5,12 and 13 units and vecP+vecQ=vecR , the angle between vecQ and vecR is :

If vecP xx vecQ=vecQ xx vecP , the angle between vecP and vecQ is theta(0^(@) lt theta lt 360^(@)) . The value of ' theta ' will be __________ ""^(@) .

vecP,vecQ,vecR,vecS are vector of equal magnitude. If vecP+vecQ-vecR=0 angle between vecP and vecQ is theta_(1) .If vecP+vecQ-vecS=0 angle between vecP and vecS is theta_(2) .The ratio of theta_(1) to theta_(2) is

If vectors vecP, vecQ and vecR have magnitudes 5, 12 and 13 units and vecP + vecQ = vecR , the angle between vecQ and vecR is :

Given that P=Q=R. if vecP+vecQ=vecR then the angle between vecP & vecR is theta_(1) then the angle between vecP & vecR is theta_(2) . What is the relation between theta_(1) and theta_(2) .

If vectors vecP, vecQ and vecR have magnitudes 5,12 and 13 units and vecP + vecQ - vecR = 0 , the angle between vecQ and vecR is

Consider a parallelogram constructed on the vectors vecA=5vecp+2vecq and vecB=vecp-3vecq . If |vecp|=2, |vecq|=5 , the angle between vecp and vecq is (pi)/(3) and the length of the smallest diagonal of the parallelogram is k units, then the value of k^(2) is equal to

ALLEN-BASIC MATHEMATICS USED IN PHYSICS &VECTORS -DOT PRODUCT
  1. What is the angle between vecA and the resultant of (vecA + hatB) and...

    Text Solution

    |

  2. If ahati +bhatj is a unit vector and it iws perpendicular to hati +hat...

    Text Solution

    |

  3. Given that A=B. What is the angle between (vecA+vecB) and (vecA-vecB) ...

    Text Solution

    |

  4. The vector sum of two forces is perpendicular to their vector differen...

    Text Solution

    |

  5. A magnitude of vector vecA,vecB and vecC are respectively 12, 5 and 13...

    Text Solution

    |

  6. If vectors vecP, vecQ and vecR have magnitudes 5, 12 and 13 units and ...

    Text Solution

    |

  7. A vector perpendicular to (4hati-3hatj) may be :

    Text Solution

    |

  8. A force (3hati+2hatj) N displaces an object through a distance (2hati-...

    Text Solution

    |

  9. If vecP.vecQ=PQ then angle between vecP and vecQ is

    Text Solution

    |

  10. The resultant of vecA and vecB is perpendicular to vecA. What is the a...

    Text Solution

    |

  11. What is the component of (3hati+4hatj) along (hati+hatj) ?

    Text Solution

    |

  12. The vector vecB= 5hati+2hatj-Shatk is perpendicular to the vector vec...

    Text Solution

    |

  13. What is the projection of vecA on vecB ?

    Text Solution

    |

  14. The angle between the vectors (hati+hatj) and (hatj+hatk) is

    Text Solution

    |

  15. The angles between the two vectors vecA=3hati+4hatj+5hatk and vecB=3ha...

    Text Solution

    |

  16. Let vec(A)=hat(i)A cos theta+hat(j)A sin theta, be any vector. Another...

    Text Solution

    |

  17. The vector vecP=ahati+ahatj+3hatj and vecQ=ahati-2hatj-hatk, are perpe...

    Text Solution

    |

  18. A force vecF= (3hati+4hatj) N acts on a body and displaces it by vecS=...

    Text Solution

    |

  19. The vector projection of a vector 3hat(i)+4hat(k) on y-axis is

    Text Solution

    |

  20. If a vector (2hati+3hatj+ 8hatk) is perpendicular to the vector (4hatj...

    Text Solution

    |