Home
Class 12
PHYSICS
If final image after two refractions thr...

If final image after two refractions through the lens and one reflection from the mirror forms at the same point O. Refrative index of the material of the lens `mu=3//2`. Then find d.

A

`100 cm`

B

`110 cm`

C

`90 cm`

D

`80 cm`

Text Solution

Verified by Experts

If after refraction from the lens, the image is formed at the centre of curvature of the mirror, the ray of light after reflection from mirror will retrace its path.
Promotional Banner

Topper's Solved these Questions

  • GMP ASSESMENT

    FIITJEE|Exercise Assertion & Reason|15 Videos

  • GMP ASSESMENT

    FIITJEE|Exercise Multiple Question|58 Videos

  • GMP ASSESMENT

    FIITJEE|Exercise Numerical Based|61 Videos

  • GENERAL PHYSICS

    FIITJEE|Exercise MATRIX MATCH TYPE|3 Videos

  • GRAVITATION

    FIITJEE|Exercise Numerical based Question|2 Videos

Similar Questions

Explore conceptually related problems

A parallel beam of light passes parallel to the principal axis and falls on one face of a thin convex lens offocal length f and after two internal reflections from the second face forms a real image. The distance of image from lens if the reflactive index of material of lens is 1.5 :

A long cylindrical tube containing water in closed by an equinvex lens of local length 10 cm in air. A point source is placed along the axis of the tube outside it at a distance of 21 cm from the lens. Locate the final image of the source. Refractive index of the materials of the lens =1.5 and that of water =1.33.

Plane surface of a thin planoconvex lens reflects 50% of light, while the curved surface is completely transparent, if final image of O after refraction through lens coinsides with the image formed due to partial reflection from plane surface. if distance (in m) between O and lens is x then find x//4

A lens forms a sharp image on a screen. On inserting a parallel sided glass slab between the lens and the screen, it is found necessary to move the screen a distance d away the lens in order for the image to be sharp again. If the refractive index of the material of the slab is mu , the thickness of the slab is

Object O is placed in front of a plane mirror M. A glass slab S having thickness t = 3 cm and refractive index mu = 1.8 is placed between the object and the mirror. The refracting faces of the slab are parallel to the mirror surface. The object is made to move with a velocity of u = 2 m//s perpendicular to the mirror surface. Find the speed of the image formed after (a) refraction from the slab followed by reflection from the mirror. (b) refraction from the slab followed by reflection from the mirror followed by the refraction from the slab.

The distance between a convex lens and a plane mirror is 10 cm. The parallel rays incident on the convex lens after reflection from the mirror forms image at the potical centre of the lens. Focal length of lens will be

Find the radius of curvature of the convex surface of a plan-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.

Find the radius of curvature of the convex surface of a plano-convex lens, whose focal length is 0.3 m and the refractive index of the material of the lens is 1.5.

FIITJEE-GMP ASSESMENT-Objective problems
  1. A liquid of refractive index 1.33 is placed between two identical plan...

    Text Solution

    |

  2. A converging lens of focal length 20 cm and diameter 5 cm is cut along...

    Text Solution

    |

  3. If final image after two refractions through the lens and one reflecti...

    Text Solution

    |

  4. A beam of light coming from infinty is passing through a biconvex lens...

    Text Solution

    |

  5. When the object is at distance mu1 and mu2 from the optical centre of ...

    Text Solution

    |

  6. A lens of any transparent material in air will behave as

    Text Solution

    |

  7. In Young's double slit experiment, white light is used. The seperation...

    Text Solution

    |

  8. In Young's double slit experiment, the intensity of light at a point o...

    Text Solution

    |

  9. YDSE is carried with two thin sheets of thickness 10.4mu m each and r...

    Text Solution

    |

  10. In Young's double slit experiment, we get 60 fringes in the field of v...

    Text Solution

    |

  11. In Young's doulbe-slit experiment the separation between two coherent ...

    Text Solution

    |

  12. A beam of light consisting of two wavelength 6300 A^(@) and lambda A^(...

    Text Solution

    |

  13. There is a equilateral prism of refractive index 3 on which a light ra...

    Text Solution

    |

  14. A current of (2.5+-0.05) A flows through a wire and develops a potenti...

    Text Solution

    |

  15. The dimension of L//C is equivalent to that of (L to inductance, C toc...

    Text Solution

    |

  16. A radioactive sample undergoes decay as per the following gragp. At ti...

    Text Solution

    |

  17. Binding energy per nucleon for C^(12) is 7.68 MeV and for C^(13) is 7....

    Text Solution

    |

  18. A radio nuclide A(1) with decay constant lambda(1) transforms into a r...

    Text Solution

    |

  19. A radioiostope X has a half-life of 10 s. Find the number of nuclei in...

    Text Solution

    |

  20. If 10% of a radioactive material decays in 5 days, then the amount of...

    Text Solution

    |