Home
Class 11
PHYSICS
Assertion: If the initial and final posi...

Assertion: If the initial and final positions coincide, the displacement is a null vector.
Reason: A physical quantity can not be called a vector, if its magnitude is zero.

A

Statement-I is true, Statement-II is true, Statement-II is correct explanation for statement-I

B

Statement-I is true, Statement-II is true, Statement-II is NOT a correct explanation for statement-I

C

Statement-I is true, Statement-II is false.

D

Statement-I is false and Statement-II is true.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • MISCELLANEOUS

    ALLEN |Exercise Comprehension 1|5 Videos

  • MISCELLANEOUS

    ALLEN |Exercise Comprehension 2|8 Videos

  • MISCELLANEOUS

    ALLEN |Exercise Exersice-03|7 Videos

  • KINEMATICS (MOTION ALONG A STRAIGHT LINE AND MOTION IN A PLANE)

    ALLEN |Exercise BEGINNER S BOX-7|8 Videos

  • PHYSICAL WORLD, UNITS AND DIMENSIONS & ERRORS IN MEASUREMENT

    ALLEN |Exercise EXERCISE-IV|7 Videos

Similar Questions

Explore conceptually related problems

Assertion: Distance is a actual length of the path but displacement is a shortest distance between initial and final position. Reason: Distance is a scalar quantity and it is always positive but displacement is a vector quantity. It may be positive, negative or zero.

Statement-I : A physical quantity can be regarded as a vector, if magnitude as well as direction is associated with it. Statement-II : A physical quantity can be regarded as a scalar quantity, if it is associated with magnitude only.

Assertion: Adding a scalar to a vector of the same dimensions is a meaningful algebraic operation. Reason: The displacement can be added with distance.

Assertion: An object can have constant speed but variable velocity. Reason: Speed is a scalar but velocity is a vector quantity.

Assertion :- Work done is positive when force acts in the direction of displacement. Reason :- Work done by frictional force can not be positive.

Assertion: If a body moves on a straight line, magnitude of its displacement and distance covered by it will be same. Reason: Along the straight line body can move only in one direction.

A 100 turn closely wound circular coil of radius 10 cm carries a current of 3.2 A. (a) What is the field at the centre of the coil? (b) What is the magnetic moment of this coil? The coil is placed in a vertical plane and is free to rotate about a horizontal axis which coincides with its diameter. A uniform magnetic field of 2T in the horizontal direction exists such that initially the axis of the coil is in the direction of the field. The coil rotates through an angle of 90^@ under the influence of the magnetic field. (c) What are the magnitudes of the torques on the coil in the initial and final position? (d) What is the angular speed acquired by the coil when it has rotated by 90^@ ? The moment of inertia of the coil is 0.1 kg m^2 .

When a particle is undergoing motion, the diplacement of the particle has a magnitude that is equal to or smaller than the total distance travelled by the particle. In many cases the displacement of the particle may actually be zero, while the distance travelled by it is non-zero. Both these quantities, however depend on the frame of reference in which motion of the particle is being observed. Consider a particle which is projected in the earth's gravitational field, close to its surface, with a speed of 100sqrt(2) m//s , at an angle of 45^(@) with the horizontal in the eastward direction. Ignore air resistance and assume that the acceleration due to gravity is 10 m//s^(2) . There exists a frame (D) in which the distance travelled by the particle is minimum. This minimum distance is equal to :-

When a particle is undergoing motion, the diplacement of the particle has a magnitude that is equal to or smaller than the total distance travelled by the particle. In many cases the displacement of the particle may actually be zero, while the distance travelled by it is non-zero. Both these quantities, however depend on the frame of reference in which motion of the particle is being observed. Consider a particle which is projected in the earth's gravitational field, close to its surface, with a speed of 100sqrt(2) m//s , at an angle of 45^(@) with the horizontal in the eastward direction. Ignore air resistance and assume that the acceleration due to gravity is 10 m//s^(2) . " A third observer (C) close to the surface of the reports that particle is initially travelling at a speed of 100sqrt(2) m//s making on angle of 45^(@) with the horizontal, but its horizontal motion is northward". The third observer is moving in :-

ALLEN -MISCELLANEOUS-ASSERTION-REASON
  1. Statement 1: whenevever the unit of measurement of a quantity is chang...

    Text Solution

    |

  2. Statement-I : When an algebraic equation has been derved, it is advisa...

    Text Solution

    |

  3. Assertion: If x and y are the distances along x and y axes respectivel...

    Text Solution

    |

  4. Statement-I : Force cannot be added to pressure. Statement-II : Beca...

    Text Solution

    |

  5. Assertion: If the initial and final positions coincide, the displaceme...

    Text Solution

    |

  6. Discuss whether or not , angular displacement is a vector quantity ?

    Text Solution

    |

  7. Assertion: A physical quantity can be regarded as a vector, if magnitu...

    Text Solution

    |

  8. Assertion: Adding a scalar to a vector of the same dimensions is a mea...

    Text Solution

    |

  9. Assertion: Minimum number of non-equal Vectors in a plane required to ...

    Text Solution

    |

  10. Assertion: The dot product of one vector with another vector may be sc...

    Text Solution

    |

  11. Statement-I : The angle between vectors vec(A)xxvec(B) and vec(B)xxvec...

    Text Solution

    |

  12. Statement-1 : If a point charge q is placed in front of an inifinite g...

    Text Solution

    |

  13. Statement-1 : When two charged spheres are touched then total charge i...

    Text Solution

    |

  14. STATEMENT -1 : Induced charge does not contribute to electric field or...

    Text Solution

    |

  15. Statement-1 : A conducting sphere charged upto 50V is placed at the ce...

    Text Solution

    |

  16. Statement-1: When a charged particle is placed in the cavity in a cond...

    Text Solution

    |

  17. Statement-1 : If two concentric conducing sphere which are connected b...

    Text Solution

    |

  18. Statement-1 : A hollow metallic sphere of inner radius a and outer rad...

    Text Solution

    |