Home
Class 12
PHYSICS
A metallic circular disc having a circul...

A metallic circular disc having a circular hole at its centre rotates about an axis passing through its centre and perpendicular to its plane. When the disc is heated:

A

Its angular speed will decrease

B

Its diameter will decrease

C

Its moment on inertia will increase

D

Its angular speed speed will increase

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • HEAT AND THERMAL EXPANSION

    PHYSICS GALAXY - ASHISH ARORA|Exercise UNSOLVED NUMRICAL PROBLEMS FOR PREPARATION OF NSEP, INPhO & IPhO|82 Videos

  • HEAT AND THERMAL EXPANSION

    PHYSICS GALAXY - ASHISH ARORA|Exercise NUMERICAL MCQs SINGLE OPTIONS CORRECT|81 Videos

  • GEOMETRICAL OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems|107 Videos

  • HEAT TRANSFER

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSEP,INPhO&IPhO|66 Videos

Similar Questions

Explore conceptually related problems

The moment of inertia of a copper disc, rotating about an axis passing through its centre and perpendicular to its plane

If a circular concentric hole is made on a disc then about an axis passing through the centre of the disc and perpendicular to its plane

Radius of gyration of a uniform circular disc about an axis passing through its centre of gravity and perpendicular to its plane is

A circular disc has a mass of 1kg and radius 40 cm. It is rotating about an axis passing through its centre and perpendicular to its plane with a speed of 10rev/s. The work done in joules in stopping it would be-

Calculate the KE of rotation of a circular disc of mass 1 kg and radius 0.2 m rotating about an axis passing through its centre and perpendicular to its plane. The disc is making 30//pi rotations per minute.

Show that the radii of gyration of a circular ring and circular disc of the same radius about an axis passing through their centres and perpendicular to their plane are in the ratio sqrt(2) : 1 .

The ratio of radii of gyration of a circular ring and a circular disc, of the same mass and radius about an axis passing through their centres and perpendicular to their planes are

A circular disc of radius R and thickness R//6 has moment of inertia I about an axis passing through its centre and perpendicular to its plane. It is melted and recast into a solid sphere. The M.I of the sphere about its diameter as axis of rotation is

PHYSICS GALAXY - ASHISH ARORA-HEAT AND THERMAL EXPANSION-ADVANCE MCQs WITH ONE OR MORE OPTIONIS CORRECT
  1. Which of the following statements is not true ?

    Text Solution

    |

  2. Which of the following statements are true?

    Text Solution

    |

  3. A metallic circular disc having a circular hole at its centre rotates ...

    Text Solution

    |

  4. Due to thermal expansion with rise in temperature:

    Text Solution

    |

  5. Two identical beakers with negligible thermal expansion are filled wit...

    Text Solution

    |

  6. Thermal capacity of a body depends on the

    Text Solution

    |

  7. Specific heat of a substance can be

    Text Solution

    |

  8. When two samples of finite specific heats at different temperatures ar...

    Text Solution

    |

  9. Which of the following statements are true?

    Text Solution

    |

  10. A metal rod is shaped into a ring with a small gap. If this is heated,...

    Text Solution

    |

  11. Two rods of length L(1) and L(2) are made of materials of coefficients...

    Text Solution

    |

  12. A bimetallic strip is made up of two metals with different alpha

    Text Solution

    |

  13. A bolt is passed through a pipe and a nut is just tightened. Coefficie...

    Text Solution

    |

  14. A unifom cylinder of steel of mass M radius R is placed on frictionles...

    Text Solution

    |

  15. A bimetallic strip is formed out of two identical strips one of copper...

    Text Solution

    |

  16. A body of mass m has gram specific heat c:

    Text Solution

    |

  17. A thermos flask contains coffee. It is vigorously sheken, considering ...

    Text Solution

    |

  18. The temperature of an isotropic cubical solid of length L, density d a...

    Text Solution

    |

  19. Specific heat of a substance can be

    Text Solution

    |

  20. 5g of steam at 100^(@)C is mixed with 10g of ice at 0^(@)C. Choose cor...

    Text Solution

    |