Home
Class 11
PHYSICS
Assertion: The parts of a machine are ...

Assertion: The parts of a machine are jammed in winter.
Reason: The viscosity of lubricants used in machines increases at low temperature.
Select the correct statement of the follwing statements.

A

Both assertion and reason are true.

B

Both assertion and reason are true and reason explains assertion correctly.

C

Both assertion and reason are true and reason does not explain assertion correctly.

D

Both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF MATTER

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS ( VERY SHORT ANSWER QUESTIONS )|36 Videos
  • PROPERTIES OF MATTER

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTION & ANSWERS (SHORT ANSWER QUESTIONS )|48 Videos
  • PROPERTIES OF MATTER

    PREMIERS PUBLISHERS|Exercise EVALUTION TEXTBOOK QUESTIONS & ANSWERS (NUMERICAL PROBLEMS )|20 Videos
  • OSCILLATIONS

    PREMIERS PUBLISHERS|Exercise OTHER IMPORTANT QUESTIONS & ANSWERS ( CONCEPTUAL QUESTIONS.)|24 Videos
  • QUESTION PAPER MARCH 2019

    PREMIERS PUBLISHERS|Exercise Part- IV|23 Videos
PREMIERS PUBLISHERS-PROPERTIES OF MATTER-OTHER IMPORTANT QUESTION & ANSWERS (MULTIPLE CHOICE QUESTIONS )
  1. Two rain drops falling through air have radii in the ratio 1:2, They w...

    Text Solution

    |

  2. Two capillaries of radii r(1)andr(2) and lengths l(1)andl(2) respectiv...

    Text Solution

    |

  3. Assertion: The parts of a machine are jammed in winter. Reason: Th...

    Text Solution

    |

  4. In the figure, the velocity v(3) will be:

    Text Solution

    |

  5. Blood is flowing at the rate of 200cm^(3)s^(-1) in a capillary of cros...

    Text Solution

    |

  6. The system shown in figure allowed to fall freely under gravity. The u...

    Text Solution

    |

  7. A lead shot of 1 mm diameter falls through a long colummn of glycerine...

    Text Solution

    |

  8. The work done against surface tension in blowing a soap bubble from a ...

    Text Solution

    |

  9. Which one of the following is not a dimensional number?

    Text Solution

    |

  10. Select the incorrect statement of the following statements.

    Text Solution

    |

  11. A spherical ball is dropped in a long column of viscous liquid, which ...

    Text Solution

    |

  12. Select the correct pair of reasons for the following statements. Criti...

    Text Solution

    |

  13. Spherical balls of radius 'R' are falling in a viscous fluid of viscos...

    Text Solution

    |

  14. The relative velocity of two parallel layers of water is 8 cm/sec. If ...

    Text Solution

    |

  15. Choose the odd law from the following laws, equation and theorem.

    Text Solution

    |

  16. Water rises in a capillary tube to a height of 2.0 cm. In another capi...

    Text Solution

    |

  17. Select the correct statement of the following statements for the follo...

    Text Solution

    |

  18. A uniform cube is subjected to volume compression. If each side is dec...

    Text Solution

    |

  19. Assertion: The shape of an automobile is so designed that its front r...

    Text Solution

    |

  20. If a liquid does not wet glass, its angle of contact is

    Text Solution

    |