Home
Class 12
PHYSICS
If vec(A).vec(B)=|vec(A)xxvec(B)|, then ...

If `vec(A).vec(B)=|vec(A)xxvec(B)|`, then the resultant of `vec(A)` and `vec(B)` is:

A

`sqrt(A^(2)+B^(2)+sqrt(2)AB)`

B

(A-B)

C

`sqrt(A^(2)+B^(2))`

D

(A + B).

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • DESCRIPTION OF MOTION IN TWO AND THREE DIMENSION

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTIONS|7 Videos

  • DESCRIPTION OF MOTION IN ONE DIMENSION

    MODERN PUBLICATION|Exercise Revision Test|45 Videos

  • E.M. INDUCTION AND A.C. CURRENTS

    MODERN PUBLICATION|Exercise RECENT COMPETITIVE QUESTIONS|31 Videos

Similar Questions

Explore conceptually related problems

If |vec(a) + vec(b)| = |vec(a) - vec(b)| then

If vec(a) and vec(b) are the vectors such that |vec(a)|=3sqrt(3), |vec(b)|=4 and |vec(a)+vec(b)|=sqrt(7) , then the angle between vec(a) and vec(b) is

If |vec(a)| = 3, |vec(b) = 4 and |vec(a) + vec(b)| = 1 , then |vec(a) - vec(b)| =

If 2 vec a . vec b = |vec a|.|vec b| then the between vec a and vec b is

If vec a and vec b are vectors such that |vec a + vec b| = |vec a - vec b| , then the angle between vec a and vec b is

If vec(a) and vec(b) are two vectors such that |vec(a) + vec(b)| = |vec(a)| , then prove tat 2vec(a) + vec(b) is perpendicular to vec(b) .

MODERN PUBLICATION-DESCRIPTION OF MOTION IN TWO AND THREE DIMENSION-Revision TEST
  1. Angle which the vector vec A = 2 hat i+3 hat j makes with the y-axis i...

    Text Solution

    |

  2. If the magnitude of the vector product is sqrt(3) times the magnitude ...

    Text Solution

    |

  3. If vec(A).vec(B)=|vec(A)xxvec(B)|, then the resultant of vec(A) and ve...

    Text Solution

    |

  4. A ball is projected from a certain point on the surface of a planet at...

    Text Solution

    |

  5. The vector which must be added to the sum of the two vectors hat i+2 h...

    Text Solution

    |

  6. If the time of flight of a body is T and horizontal range is R, then t...

    Text Solution

    |

  7. A force of (10 hat(i) - 3 hat(j) + 6hat(k)) newton acts on a body of m...

    Text Solution

    |

  8. Given a vector vec A =3hati-4hat j . Which of the following is perpend...

    Text Solution

    |

  9. Two projectiles A and B are thrown with velcoity v and v/2 respectivel...

    Text Solution

    |

  10. A small ball suspended from a string is set into oscillation. When the...

    Text Solution

    |

  11. A stone is thrown with a velocity v at an angle theta with the horizon...

    Text Solution

    |

  12. Two projectiles thrown with different velocities and at different angl...

    Text Solution

    |

  13. Show that a proejctile fired at an angle theta with the horizontal cro...

    Text Solution

    |

  14. If vecA=3 hati-4hatj, vecB=-2 hat i+3hat j and vec C = vecA xx vecB, t...

    Text Solution

    |

  15. A projectile of mass 100 g is fired with a velocity of 20 ms^(-1) maki...

    Text Solution

    |

  16. A projectile is fired with a velocity v at angle theta with the horizo...

    Text Solution

    |

  17. A particle projected horizontally from the top of an inclined plane in...

    Text Solution

    |

  18. Two peojectiles are fired from the same point with same velocity at an...

    Text Solution

    |

  19. The equation of motion of a projectile is y =sqrt(3x)-(gx^(2))/2 The a...

    Text Solution

    |

  20. At what angle an object be projected so that the horizonal range is eq...

    Text Solution

    |