Home
Class 12
MATHS
If veca is any vector, then vecaxxveca i...

If `veca` is any vector, then `vecaxxveca` is :

A

1

B

0

C

`|veca|^(2)`

D

`vec0`

Text Solution

Verified by Experts

The correct Answer is:
d
Promotional Banner

Topper's Solved these Questions

  • VECTOR ALGEBRA

    ACCURATE PUBLICATION|Exercise QUESTIONS CARRYING 1 MARK (TYPE - II : FILL IN THE BLANKS QUESTIONS)|27 Videos

  • VECTOR ALGEBRA

    ACCURATE PUBLICATION|Exercise QUESTIONS CARRYING 1 MARK (TYPE - III : TRUE RO FALSE QUESTIONS)|15 Videos

  • THREE DIMENSIONAL GEOMETRY

    ACCURATE PUBLICATION|Exercise QUESTIONS CARRYING 6 MARKS:|56 Videos

Similar Questions

Explore conceptually related problems

If veca is any vector, then veca*veca is :

If veca is any vector, then show that veca=(veca.hati)hatj+(veca.hatj)hatj+(veca.hatk)hatj .

If veca" and "vecb are any two vectors, then (veca xx vecb)^(2)= |veca|^(2)|vecb|^(2)-(veca* vecb)^(2) .

If veca is a unit vector and (vecx - veca) cdot (vecx + veca) = 8 , then find |vecx|

If veca is a unit vector and (vecx-veca).(vecx+veca)=255 then find |vecx|

If veca is any vector in space, show that : veca=(veca*hati)hati+(veca*hatj)hatj+(veca*hatk)hatk .

State wheter is true or false: If veca,vecb be two vectors then |veca + vecb| is |veca| + |vecb|

State whether it is true or false If veca, vecb are two vectors then |veca.vecb|le|veca||vecb|

If veca and vecb are any two vectors, prove that (vecaxxvecb)^(2)=|veca|^(2)|vecb|^(2)-(veca.vecb)^(2) It is known as Largange's indentity.

ACCURATE PUBLICATION-VECTOR ALGEBRA-QUESTIONS CARRYING 2 MARKS
  1. If veca is any vector, then vecaxxveca is :

    Text Solution

    |

  2. Prove that the figure formed by joining the mid-points of the pairs of...

    Text Solution

    |

  3. If veca=hati+hatj+hatk,vecb=2hati-hatj+3hatk,vecc=hati-2hatj+hatk, the...

    Text Solution

    |

  4. If veca=2hati-hatj+3hatk,vecb =hati+hatj-hatk, vecc=3hati+4hatj-5hatk,...

    Text Solution

    |

  5. If veca=5hati+hatj-4hatk, vecb=2hati-3hatj+hatk and vecc=hati+3hatj-2h...

    Text Solution

    |

  6. Show that the points A(1,2,7), B(2,6,3) and C(3,10,-1) are collinear.

    Text Solution

    |

  7. Show that the three points with position vectors 2hati+6hatj+3hatk,hat...

    Text Solution

    |

  8. Show that the points : A(-2hati+3hatj+5hatk), B(hati+2hatj+3hatk) and ...

    Text Solution

    |

  9. Show that . the points (2. 6, 3), (1, 2, 7) and (3, 10, -1) are collin...

    Text Solution

    |

  10. Find the position vector of a point R which divides the line joining t...

    Text Solution

    |

  11. Find the position vector of a point R which divides the line joining t...

    Text Solution

    |

  12. Find the angle between two vectors veca and vecb with magnitudes sqrt3...

    Text Solution

    |

  13. For any two vectors veca and vecb, prove that |veca.vecb|le|veca||vec...

    Text Solution

    |

  14. For any two vectors veca and vecb, prove that : |veca+vecb|le|veca|+|v...

    Text Solution

    |

  15. If |veca|=3, |vecb|=4 and |vecc|=5 and each of them is perpendicular ...

    Text Solution

    |

  16. If |veca|=2, |vecb|=3 and |vecc|=4 and each of them is perpendiculart...

    Text Solution

    |

  17. If |veca|=7, |vecb|=1 and |vecc|=5 and each of them is perpendicular ...

    Text Solution

    |

  18. Let veca,vecb,vecc be the three vectors of magnitude 5, 3, I respectiv...

    Text Solution

    |

  19. Find the scalar projection of : veca=2hati-hatj-3hatk on vecb=3hati-5h...

    Text Solution

    |

  20. Find the scalar projection of : veca=7hati+3hatj+6hatk on vecb=5hati-2...

    Text Solution

    |

  21. Find the scalar projection of vecb on veca where : veca=2hati-2hatj+ha...

    Text Solution

    |