Home
Class 11
PHYSICS
Which of the following is not true? If v...

Which of the following is not true? If `vecA=3hati+4hatj` and `vecB=6hati+8hatj` where `A` and `B` are the magnitude of `vecA` and `vecB`

A

`vecAxxvecB=0`

B

`A/B=1/2`

C

`vecA.vecB=50 A=5`

D

`A=-5`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • UNITS, DIMENSION & MEASUREMENTS

    ERRORLESS |Exercise All Questions|333 Videos

  • WAVES AND SOUND

    ERRORLESS |Exercise SET|25 Videos

Similar Questions

Explore conceptually related problems

Which of the following is not true ? If vecA=3hati+4hatj and vecB=6hati+8hatj where A and B are the magnitudes of vecA and vecB ?

If vecA=4hati+6hatj and vecB=2hati+3hatj . Then

If vecA=2hati+4hatj and vecB=6hati+8hatj and A and B are the magnitudes of vecA and vecB , then which of the following is not true?

If vecA=2hati + 3hatj and vecB= 5hati + 7hatj , then the vector having the magnitude of vecA and direction of vecB would be

If the vectors vecA=2hati+4hatj and vecB=5hati-phatj are parallel to each other, the magnitude of vecB is

Given veca = hati-hatj+hatk and vecb = 2hati-4hatj-3hatk , find the magnitude of veca

If vecA=4hati-3hatj and vecB=6hati+8hatj then magnitude and direction of vecA+vecB will be

If vecA = 3hati + 4hatj and vecB = hati + hatj + 2hatk then find out unit vector along vecA + vecB .

ERRORLESS -VECTORS-Exercise
  1. Given that vecA+vecB+vecC=0, out of three vectors two are equal in mag...

    Text Solution

    |

  2. Two forces F(1)=1N and F(2)=2N act along the lines x=0 and y=0, respec...

    Text Solution

    |

  3. At what angle must the two forces (x+y) and (x-y) act so that the resu...

    Text Solution

    |

  4. Following forces start acting on a particle at rest at the origin of t...

    Text Solution

    |

  5. The resultant of vec(A)+vec(B) is vec(R )(1). On reversing the vector ...

    Text Solution

    |

  6. Figure below shows a body of mass M moving with the uniform speed on a...

    Text Solution

    |

  7. A particle is moving on a circular path of radius r with uniform veloc...

    Text Solution

    |

  8. vecA=2hati+4hatj+4hatk and vecB=4hati+2hatj-4hatk are two vectors. The...

    Text Solution

    |

  9. If vecA=2hati+3hatj-hatk and vecB=-hati+3hatj+4hatk then projection of...

    Text Solution

    |

  10. Two constant forces F(1)=2hati-3hatj+3hatk(N) and F(2)=hati+hatj-2hatk...

    Text Solution

    |

  11. For the any two vecrtors vecA and vecB, if vecA.vecB=|vecAxxvecB|, the...

    Text Solution

    |

  12. Which of the following is the unit vector perpendicular to vecA and ve...

    Text Solution

    |

  13. Two vectors P=2hati+bhatj+2hatk and Q=hati+hatj+hatk will be parallel ...

    Text Solution

    |

  14. Which of the following is not true? If vecA=3hati+4hatj and vecB=6hati...

    Text Solution

    |

  15. The area of the triangle formed by 2hati+hatj-hatk and hati+hatj+hatk ...

    Text Solution

    |

  16. Two trains along the same straight rails moving the constant speed 60k...

    Text Solution

    |

  17. A steam boat goes across a lake and comes back : (a) on a quiet day wh...

    Text Solution

    |

  18. To a person, going eastward in a car with a velociyt of 25km//hr, a tr...

    Text Solution

    |

  19. A swimmer can swim in still water with speed v and the river is flowin...

    Text Solution

    |

  20. A bus is moving with a velocity 10 ms^-1 on a straight road. A scooter...

    Text Solution

    |