Home
Class 12
PHYSICS
Assertion : An object may have varying s...

Assertion : An object may have varying speed without having varying velocity.
Reason : If the velocity is zero at an instant, the acceleration may not be zero at that instant.

A

If both assertion `&` Reason are True `&` the Reason is a corrrect explanation of the Asserion.

B

If both Assertion `&` Reason are True but Reason is not correct explanation of the Assertion.

C

If Assertion is Trie but the Reason is False.

D

If both Assertion `&` Reason are false

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PALNE

    ALLEN|Exercise SOLVED EXAMPLE|28 Videos

  • MOTION IN A PALNE

    ALLEN|Exercise EXERCISE-2|170 Videos

  • KINEMATICS-2D

    ALLEN|Exercise Exercise (O-2)|46 Videos

  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN|Exercise EXERCISE (JA)|4 Videos

Similar Questions

Explore conceptually related problems

Mark the correct statements for a particle go ing on a straight line: (a) If the velocity and acceleration have opposite sign, the object is slowing down. (b) If the position and velocity have opposite sign, the particle is moving towards the origin. (c) If the velocity is zero at an instant, the acceleration should also be zero at that instant. (d) If the velocity is zero for a time interval, the acceleration is zero at any instant within the time interval.

An object may have ( a) varying speed without having varying velocity (b) varying velocity without having varying speed (c) nonzero acceleration without having varying velocity (d) nonzero acceleration without having varying speed.

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

Can a body have acceleration without having velocity?

Assertion : An object may fall with a constant velocity. Reason : This happens when acceleration of the object is equal to acceleration due to gravity.

Give an example where the velocity of an object is zero but its acceleration is not zero.

Can a body have zero velocity and finite acceleration?

Give an example of a case where the velocity of an object is zero but its accleration is not zero?

When the velocity of a body executing shm is zero its acceleration is not zero. Why?

Assertion : The accelerated motion of an object may be due to change in magnitude of velocity or direction of velocity or both. Reason : Acceleration can be produed only by change in the magnitude of the velocity.

ALLEN-MOTION IN A PALNE-EXERCISE-3
  1. Assertion: When a particle moves with constant velocity its average ve...

    Text Solution

    |

  2. Assertion: The average velocity of a particle is zero in a time interv...

    Text Solution

    |

  3. Assertion : An object may have varying speed without having varying ve...

    Text Solution

    |

  4. Assertion: Average speed of a particle in a given time interval is nev...

    Text Solution

    |

  5. Assertion: In successive time intervals if the average velocities of a...

    Text Solution

    |

  6. Assertion : In a free fall, the initial velocity of a body may or may ...

    Text Solution

    |

  7. Assertion: An observer is moving due east and wind appears him to blow...

    Text Solution

    |

  8. Assertion: The distance and displacment both are equal when the partic...

    Text Solution

    |

  9. Statement I: Graph (1) represent one dimensional motion of a particle....

    Text Solution

    |

  10. Assertion: In general |Displacement| le distance. Reason: The instan...

    Text Solution

    |

  11. Assertion : In a free fall, the initial velocity of a body may or may ...

    Text Solution

    |

  12. Assertion: Distance is a actual length of the path but displacement is...

    Text Solution

    |

  13. Assertion: Rest of a body is a relative term. Reason: Motion of a bo...

    Text Solution

    |

  14. Assertion: If a body moves on a straight line, magnitude of its displa...

    Text Solution

    |

  15. Assertion: Separation between two bodies moving in the same direction ...

    Text Solution

    |

  16. Assertion: To cross the river in minimum time swimmer should swimming ...

    Text Solution

    |

  17. Assertion: A body moving with constant acceleration always travels equ...

    Text Solution

    |

  18. Assertion: A body,whatever its motion, is always at rest in a frame of...

    Text Solution

    |

  19. Assertion : A body droped from a given height and another body project...

    Text Solution

    |

  20. Statement-I : A projectile is thrown with an initial velocity of (ahat...

    Text Solution

    |