Home
Class 11
PHYSICS
A circular disc of which 2//3 part is co...

A circular disc of which `2//3` part is coated with yellow and `1//3` part is with blue . It is rotated about its central axis with high velocity. Then it will be seen as

A

green

B

blue

C

white

D

yellow

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|80 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos

  • REFRACTION OF LIGHT

    TARGET PUBLICATION|Exercise EVALUATION TEST|12 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

  • SCALARS AND VECTORS

    TARGET PUBLICATION|Exercise Evaluation Test|19 Videos

Similar Questions

Explore conceptually related problems

A circular disc fixed at its centre to a metal wire and the other end of the wire is clamped. The disc is rotated about the wire as axis and is released. The disc about this axis makes simple harmonic oscillations with a frequency of (1)/(2) Hz. If moment of inertia of the disc about this axis is 0.1 kg -m^(2) , the torsional constant of the wire is

A circular disc is rotating about its own axis, the direction of its angular momentum is

A thin disc of radius R has charge Q distributed uniformly on its surface. The disc is rotated about one of its diametric axis with angular velocity omega . The magnetic moment of the arrangement is

A disc of mass 1 kg and radius 10 cm is rotating about its axis with an anuglar velocity of 2 rad/s. The linear momentum of the disc,

When a circular disc of radius 0.5 m is rotating about its own axis, then the direction of its angular momentum is

A plastic circular disc of radius R is placed on a thin oil film spread over a flat horizontal surface the torque required to spin the disc about its central vertical axis with a constant angular velocity is proportional to

A circular disc is rotating without friction about its natural axis with an angular velocity omega . Another circular disc of same material and thickness but half the raduis is gently placed over it coaxially. The angular velocity of composite disc will be

A uniform circular disc of mass 50kg and radius 0.4 m is rotating with an angular velocity of 10 rad s^(-1) about its own axis, which is vertical. Two uniform circular rings, each of mass 6.25 kg and radius 0.2 m, are gently placed symmetrically on the disc in such a manner that they are touching each other along the axis of the disc and are horizontal. Assume that the friction is large enough such that the rings are at rest relative to the disc and the system rotates about the original axis. The new angular velocity (in red s^(-1)) of the system is

A circular disc of moment of inertia I_(t) is rotating in a horizontal plane about its symmetry axis with a constant angular velocity omega_(i) . Another disc of moment of inertia I_(b) is dropped co-axially onto the rotating disc. Initially, the second disc has zero angular speed. Eventually, both the discs rotate with a constant angular speed omega_(f) . Calculate the energy lost by the initially rotating disc due to friction.

There is a uniform circular disc of mass 10kg & radius 2 meter. Calculate the radius of gyration if it is rotating about an axis passing through its centre & perpendicular to its plane

TARGET PUBLICATION-REFRACTION OF LIGHT -CRITICAL THINKING
  1. To produce deviation without dispersion with the help of crown glass p...

    Text Solution

    |

  2. A crown glass prism of refracting angle A= 6^@ is to be achromatised f...

    Text Solution

    |

  3. ir the refractive indices of crown glass for red yellow and violet col...

    Text Solution

    |

  4. The dispersive powers of crown and flint glasses are 0.03 and 0.05 res...

    Text Solution

    |

  5. Raman line lies in.

    Text Solution

    |

  6. A ray of monochromatic light is incident on one refracting face of a p...

    Text Solution

    |

  7. A ray of light passing through a prism having refractive index sqrt(2)...

    Text Solution

    |

  8. The distance travelled by a ray of light in two media, in the same tim...

    Text Solution

    |

  9. A small bulb is placed at the bottom of a tank containing water to a d...

    Text Solution

    |

  10. A tank is filled with water to height of 12.5 cm. The apparent depth o...

    Text Solution

    |

  11. A vessel of depth 2d cm is half filled with liquid of refractive inde...

    Text Solution

    |

  12. A layer of oil 3 cm thick is flowing on a layer of coloured wtater 5 c...

    Text Solution

    |

  13. The deviation produced by a thin glass prism placed in air, when immer...

    Text Solution

    |

  14. A fish at a depth of sqrt(7) cm bleow the surface of water sees the ou...

    Text Solution

    |

  15. A ray of light is incident normally normallyh on one of the faces of a...

    Text Solution

    |

  16. On heating a liquid, the refractive index generally

    Text Solution

    |

  17. If hat(i) denotes a unit vector along incident light ray, hat( r) a un...

    Text Solution

    |

  18. The fine powder of a coloured glass is seen as

    Text Solution

    |

  19. A circular disc of which 2//3 part is coated with yellow and 1//3 part...

    Text Solution

    |

  20. Light enters at an angle of incidence in a transparent rod of refracti...

    Text Solution

    |