Home
Class 12
PHYSICS
Assertion:- For Reynolds number R(e)gt20...

Assertion:- For Reynolds number `R_(e)gt2000m`, the flow of fluid is turbulent.
Reason:- Inertial forces are dominant compared to the viscous forces at such high Reynolds number.

A

If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.

B

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

C

If Assertion is True but the Reason is False.

D

If both Assertion `&` Reason are False.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    ALLEN|Exercise Part-1 Physics|15 Videos
  • TEST PAPERS

    ALLEN|Exercise part-2 physics|63 Videos
  • TEST PAPERS

    ALLEN|Exercise PAPER 2|60 Videos
  • TEST PAPER 4

    ALLEN|Exercise PHYSICS|45 Videos
  • UNIT & DIMENSIONS, BASIC MATHS AND VECTOR

    ALLEN|Exercise Exercise (J-A)|7 Videos

Similar Questions

Explore conceptually related problems

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: For Reynold's number R_egt2000 , the flow of fluid is turbulent. Reason: Inertial forces are dominant compared to the viscoud forces at such high Reynold's number

Statement-1: For reynold number R_(e)gt2000 the flow of fluid is turbulent. Statement-2: Inertial forces are dominant compared to the viscous forces at such high reynold numbers.

For turbulent flow, the value of Reynolds number is

Assertion: Reynolds number determines the nature of flow of a liquid through a pipe. Reason: For streamlined flow, the critical velocity should be as small as possible.

What is the value of Reynold's number, when the flow of liquid in a tube is (i) laminer (ii) turbulent?

Flow of fluid through a tube is streamlined, when the Reynold number is

Assertion: The flow is turbulent for Reynolds number greater than 2000 Reason: Turbulence dissipates kinetic energy in the form of heat.

If R_(e) is the Reynold's number, then which of the following is incorrect

Assertion: Natural radioactive nuclei are nuclei of high mass number. Reason: The B.E. per nucleon of heavy nuclei is large as compared to that of the stable nuclei.

The Reynold's number for fluid flow in a pipe is independent of

ALLEN-TEST PAPERS-PAPER 3
  1. Assertion:- Any arbitrary displacement of charges inside a shell does ...

    Text Solution

    |

  2. Assertion:- Kirchhoff's voltage law indicates that field is conservati...

    Text Solution

    |

  3. Assertion:- Magnetism and superconductivity are natural enemies. Rea...

    Text Solution

    |

  4. Asseration: A metal piece and a non-metal (stone) piece are dropped fr...

    Text Solution

    |

  5. Assertion:- If earth did not have atomosphere, its average surface tem...

    Text Solution

    |

  6. Assertion:- Different colours of light have same velocity in vaccum, b...

    Text Solution

    |

  7. Assertion:- If an object placed on the optic axis of a lens is illumin...

    Text Solution

    |

  8. Assertion:- A simple microscope may have different magnification for d...

    Text Solution

    |

  9. Assertion : Newton's rings are formed in the reflected system. When th...

    Text Solution

    |

  10. Assertion:- A photocell is called an electric eye. Reason:- The elec...

    Text Solution

    |

  11. Assertion : Soft and hard X-rays differ in frequency as well as veloci...

    Text Solution

    |

  12. In beta-decay, all the emitted electron do not have the same energy th...

    Text Solution

    |

  13. Statement-I : To be used as amplifier, the transistor in the common em...

    Text Solution

    |

  14. Assertion:- Optical communication system is more economical than other...

    Text Solution

    |

  15. Assertion:- Two identical trains move in opposte sense in equatorial p...

    Text Solution

    |

  16. Statement-1: The size of a hydrogen increases as it rises in air. St...

    Text Solution

    |

  17. Assertion:- For Reynolds number R(e)gt2000m, the flow of fluid is turb...

    Text Solution

    |

  18. Assertion:- To drink chilled juicc, we use icc cubes of 0^(@)C. Reas...

    Text Solution

    |

  19. Assertion:- During adiabatic expansion of an ideal gas, temperature fa...

    Text Solution

    |

  20. Assertion:- Transvers waves are produced in a very long string fixed a...

    Text Solution

    |