Home
Class 11
PHYSICS
Assertion : paper pins are made to hav...

Assertion : paper pins are made to have pointed end.
Reason : Because pointed pins have very small area due to which even for small applied force it exert large pressure on the surface.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion ture but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • FLUID MECHANICS

    ERRORLESS |Exercise Fluid Mechanics|19 Videos
  • FLUID MECHANICS

    ERRORLESS |Exercise Graphical Questions|5 Videos
  • ELASTICITY

    ERRORLESS |Exercise Self Evaluation Test|11 Videos
  • FRICTION

    ERRORLESS |Exercise MCQ S|125 Videos

Similar Questions

Explore conceptually related problems

Pins and nails are made to have ponted end because

Assertion: Only microwaves are used in radar. Reason: Because microwaves have very small wavelength.

Assertion : There is no atmosphere on the moon. Reason : The escape velocity on the surface of moon is very small. Due to this, molecules of the gases easily escape.

The solid angle substended at any point inside the surface due to small area ds is given by

Assertion : Fuse wire must have high resistance and low melting point. Reason : Fuse is used for small current flow only.

Assertion: Fuse wire must have high resistance and low melting point. Reason: Fuse is used for small current flow only.

Assertion : Railways tracks are laid on small sized wooden sleepers. Reason : Small sized wooden sleepers are used so that rails exert more pressure on the railway track. Due to which rail does not leave the track

Assertion (A) : NaCl and MgO have coulombic forces of attraction between them. Reason (R): Each point in a lattice is called lattice point or lattice site.

ERRORLESS -FLUID MECHANICS-Asseration and Reason
  1. Assertion: The velocity of flow of a liquid is smaller when pressure i...

    Text Solution

    |

  2. Assertion: The shape of an automobile is so designed that its front re...

    Text Solution

    |

  3. Assertion : The size of the needle of a syninge controls flow rate b...

    Text Solution

    |

  4. Assertion: A fluid flowing out of a small hole in a vessel apply a bac...

    Text Solution

    |

  5. Assertion : For a floating body to be in stable equilibrium, its cen...

    Text Solution

    |

  6. Assertion : Water flows faster than honey. Reason : The coefficie...

    Text Solution

    |

  7. Assertion : The viscosity of liquid increases rapidly with rise of t...

    Text Solution

    |

  8. Assertion : Aeroplanes are made to run on the runway before take off...

    Text Solution

    |

  9. Assertion: Sudden fall of pressure of at a place indicates storm. R...

    Text Solution

    |

  10. Statement-1: Machine parts are jammed in winter. Statement-2: The vi...

    Text Solution

    |

  11. Statement -1 : A block of wood is floating in a tank containing water....

    Text Solution

    |

  12. Statement -1 : A rain drop after fallling through some height attains ...

    Text Solution

    |

  13. Assertion : paper pins are made to have pointed end. Reason : Beca...

    Text Solution

    |

  14. Assertion : Railways tracks are laid on small sized wooden sleepers....

    Text Solution

    |

  15. Assertion : It is difficult to stop bleeding from a cut in the body ...

    Text Solution

    |

  16. Assertion : To empty an oil tank, two holes are made. Reason : Oi...

    Text Solution

    |

  17. Assertion : Terminal velocity is same as the critical velocity. Re...

    Text Solution

    |

  18. Assertion : When two boats sails parallel in the same direction and ...

    Text Solution

    |

  19. Assertion : Cars and aeroplanes are streamlined. Reason : This is...

    Text Solution

    |

  20. Statement-1 : Bernoulli’s theorem holds for incompressible, non-viscou...

    Text Solution

    |