Home
Class 11
PHYSICS
When a light is incident at one end of t...

When a light is incident at one end of the fibre at a small angle, then refracted light falls on the wall of the fibre at an angle

A

equal to critical angle.

B

greater than `90^@`

C

equal t `0^@`.

D

greater than critical angle.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • Motion in a plane

    TARGET PUBLICATION|Exercise Exercise|340 Videos

  • RAY OPTICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|16 Videos

Similar Questions

Explore conceptually related problems

When a light is incident at one end of wood with qurtz. At a small angle, then refracted light falls on the wall of the fibre at an angle

A ray of light is incident on the surface of seperation of a medium at an angle 45^(@) and is refracted in the medium at an angle 30^(@) . What will be the velocity of light in the medium?

A light beam is incident at an angle twice the angle twice the angle of refraction. The angle of refraction is

A ray of monochromatic light is incident on one refracting face of a prism of refracting angle 75^(@) . It passes through the prism and is incident on the other face at the critical angle If the refracive index of the material of prism is sqrt(2) , the angle of incidence on the first face o the prism is

When light is incident on a medium at angle i and refracted into a second medium at an angle r, the graph of sin i vs sin r is as shown in the graph, From this, one can conclude that

A ray of light is incident at an angle of 60^(@) on the face of a prism with an angle of 60^(@) . Then the refractive index of the material of the prism is (the prism is in minimum deviation position)

A plane mirror PQ is help normally to water surface of refractive idex 1.33. A ray of light is incident at an angle of 50^@ with the nirror surface. After reflection the ray is refracted into water. The angle of refraction r is

If the light was incident on the interface at an angle greater than critical angel what occurs?

A transparent solid cylindrical rod has a refractive index of (2)/(sqrt(3)) . If is surrounded by air. A light ray is incident at the mid-poin of one end of the rod as shown in the figure. The incident angle theta for which the light ray grazes along the wall of the rod is

TARGET PUBLICATION-OPTICS-EXERCISE
  1. Optical fibre consists of large number of

    Text Solution

    |

  2. Consider telecommunication through optical fibres. Which of the follow...

    Text Solution

    |

  3. When a light is incident at one end of the fibre at a small angle, the...

    Text Solution

    |

  4. The light entering into the fibre suffers

    Text Solution

    |

  5. If I is the intesity of light entering into the optical fibre and IC i...

    Text Solution

    |

  6. In periscopes, totally reflecting prisms are used which turns the ray ...

    Text Solution

    |

  7. While deriving expression for refraction at single curved, surface, ...

    Text Solution

    |

  8. The correct expression for refraction at single convex spherical surfa...

    Text Solution

    |

  9. The reciprocalof ((mu(2)-mu(1))/(R)) gives the value of

    Text Solution

    |

  10. A point object is situated in air at a distance of 20 cm from a convex...

    Text Solution

    |

  11. The focal length of a lens depends upon

    Text Solution

    |

  12. The lense formula with normal notation is given by

    Text Solution

    |

  13. The lens maker's equation is given by

    Text Solution

    |

  14. For convex lens, the radii of curvatures of the first and second surfa...

    Text Solution

    |

  15. A beam of light is incident on a convex lens nparallel to its principa...

    Text Solution

    |

  16. An object is kept at 0.2 m from a convex lens of focal length of 0.15 ...

    Text Solution

    |

  17. A convex lens of focal length f produces a real image 3 times as that ...

    Text Solution

    |

  18. when an object is kept in frnt of a convex lens the distance between i...

    Text Solution

    |

  19. What is the focal length of double convex lens for which radius of cur...

    Text Solution

    |

  20. A plano-convex lens has focal length of 20 cm. the radius of its sph...

    Text Solution

    |