Home
Class 12
PHYSICS
Assertion: Frictional force is the compo...

Assertion: Frictional force is the component of contact force parallel to the surface.
Reason: Friction force always opposes the motion of a body.

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:
C

Friction force opposes relative motion.
Promotional Banner

Topper's Solved these Questions

  • NEWTONS LAWS OF MOTION

    ALLEN |Exercise EXERCISE-II|112 Videos
  • NEWTON'S LAWS OF MOTION & FRICTION

    ALLEN |Exercise EXERCISE (JA)|4 Videos
  • RACE

    ALLEN |Exercise Basic Maths (Wave Motion & Dopplers Effect) (Stationary waves & doppler effect, beats)|25 Videos

Similar Questions

Explore conceptually related problems

What is contact force ?

Assertion : The force of tension on a body always act away from the body. Reason: Friction force always opposes the motion of a body.

Write the equation of friction force parallel to the surface of slope for rolling body.

Assertion :- When a man climbs the rope friction force acts in downward direction. Reason :- Friction force opposes relative motion to tendency of relative motion between two contact surfaces.

Assertion: When a force vecF attempts to slide a body along a surface, a frictional force parallel to the surface and directed so as to oppose the sliding, is exerted on the body by the surface. Reason: It is due to the bonding between the body and the surface.

Explain - “Static friction force opposes impending motion”

Assertion: Frictional forces are conservative forces. Reason: Potential energy can be associated with frictional forces.

Assertion: Force of friction depends on the actual area of contact. Reason: Larger the area of actual contact, larger is oppose to motion.

Assertion: Static frictional force is a self adjusting force. Reason: Force of static friction does not depend upon the mass of the body.

Assertion :- Work done by frictional force may be sometimes path independent. Reason :- Frictional force is a non - conservative force.

ALLEN -NEWTONS LAWS OF MOTION-EXERCISE-III
  1. Assertion: Static frictional force is a self adjusting force. Reason...

    Text Solution

    |

  2. Assertion : A body can be at rest even when it is under the action of ...

    Text Solution

    |

  3. Assertion: Frictional force is the component of contact force parallel...

    Text Solution

    |

  4. Assertion: Newton's first law can be derived from the second law. Re...

    Text Solution

    |

  5. These questions consists of two statements each printed as Assertion a...

    Text Solution

    |

  6. Assertion: Pseudo force is an imaginary force which is recongnised on...

    Text Solution

    |

  7. Assertion: A table cloth can be pulled from a table without dislodding...

    Text Solution

    |

  8. Assertion: Friction is a self-adjusting force. Reason: A block on th...

    Text Solution

    |

  9. Assertion: The apparent weight of a person standing in a lift which mo...

    Text Solution

    |

  10. Assertion: A body of weight 10N (W) is at rest on an inclined plane (m...

    Text Solution

    |

  11. Assertion: When a force vecF attempts to slide a body along a surface,...

    Text Solution

    |

  12. Assertion: Mass is a property of one object alone, whereas weight resu...

    Text Solution

    |

  13. Assertion: When brakes are applied on a wet road, a car is likely to s...

    Text Solution

    |

  14. Assertion : The force of tension on a body always act away from the bo...

    Text Solution

    |

  15. Assertion: It is difficult to move a heavy box by sliding whereas it b...

    Text Solution

    |

  16. Assertion: Every mutual intraction between two bodies always follow th...

    Text Solution

    |

  17. Assertion: Static slides down an inclined plane if the angle of fricti...

    Text Solution

    |

  18. Assertion: Magnitude of the contact force is always greater than the m...

    Text Solution

    |

  19. Assertion: When a person walks on a rough surface, the frictional forc...

    Text Solution

    |

  20. Assertion: Newton's second law of motion gives the measurement of forc...

    Text Solution

    |