Home
Class 12
PHYSICS
Angle of prism is A and its one surface ...

Angle of prism is `A` and its one surface is silvered. Light rays falling at an angle of incidence `2 A` on first surface return back through the same path after suffering reflection at second silvered surface. Refraction index of the material of prism is

A

`2 sinA`

B

`2 CosA`

C

`1/2 Cos`

D

`tan A`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|89 Videos
  • OSCILLATIONS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|50 Videos
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-OPTICS AND OPTICAL INSTRUMENTS-All Questions
  1. A beam of light of lamda=600 nm from distant source falls on a single ...

    Text Solution

    |

  2. In a Young's double slit experiment the intensity at a point where tha...

    Text Solution

    |

  3. Angle of prism is A and its one surface is silvered. Light rays fallin...

    Text Solution

    |

  4. A plano-convex lens fits exactly into a plano-concave lens. Their plan...

    Text Solution

    |

  5. For a normal eye, the cornea of eye provides a converging power of 40 ...

    Text Solution

    |

  6. In Young's double-slit experiment, the slits are 2mm apart and are ill...

    Text Solution

    |

  7. When a biconvex lens of glass having refractive index 1.47 is dipped i...

    Text Solution

    |

  8. A ray of light is incident at small angle I on the surface of prism of...

    Text Solution

    |

  9. A concave mirrorr of focal length f(1) is placed at a distance of d fr...

    Text Solution

    |

  10. The magnifying power of a telescope is 9. When it is adjusted for para...

    Text Solution

    |

  11. A biconvex lens has a radius of curvature of magnitude 20cm. Which one...

    Text Solution

    |

  12. Which of the following is not due to total internal reflection ?

    Text Solution

    |

  13. A ray of light travelling in a transparent medium f refractive index m...

    Text Solution

    |

  14. A lens having focal length f and aperture of diameter d forms an image...

    Text Solution

    |

  15. A boy is trying to start a fire by focusing sunlight on a piece of pap...

    Text Solution

    |

  16. Two thin lenses of focal length f(1) and f(2) are in contact and coaxi...

    Text Solution

    |

  17. The frequency of a light wave in a material is 2xx10^(14)Hz and wavele...

    Text Solution

    |

  18. A small coin is resting on the bottom of a beaker filled with a liquid...

    Text Solution

    |

  19. A convex lens and a concave lens, each having same focal length of 25 ...

    Text Solution

    |

  20. A microscope is focused on a mark on a piece of paper and then a slab ...

    Text Solution

    |