Home
Class 12
PHYSICS
A rectangular glass block of thickness 1...

A rectangular glass block of thickness 10 cm and refractive index 1.5 placed over a small coin. A beaker is filled with water of refractive index `4//3` to a height of 10 cm and is placed over the glass block.
(a) Find the apparent position of the object when it is viewed at near normal incidence.
(b) if the eye is slowly moves away from the normal at a certain position, the object is found to disappear, due to total internal reflection. At what surface does this happen and why ?

Promotional Banner

Topper's Solved these Questions

  • RAY OPTICS

    SL ARORA|Exercise TYPE A|15 Videos

  • RAY OPTICS

    SL ARORA|Exercise Problems For Self Practice|109 Videos

  • RAY OPTICS

    SL ARORA|Exercise TYPE J|11 Videos

  • OPTICAL INSTRUMENTS

    SL ARORA|Exercise Problems for self practice|35 Videos

  • SOLIDS AND SEMICONDUCTOR DEVICES

    SL ARORA|Exercise PROBLEM_TYPE|9 Videos

Similar Questions

Explore conceptually related problems

A pond of depth 20 cm is filled with water of refractive index 4//3 . Calculate apparent depth of the tank when viewed normally.

A glass slab of thickness 3cm and refractive index 1.5 is placed in front of a concave mirror of focal length 20cm. Where should a poing object be placed if it is to image on to itself?

A rectangular slab of refractive index mu is placed over another slab of refractive index 3 both slabs being identical in dimensions.If a coin is placed below the lower slab for what value of mu will the coin appear to be placed at the interface between the slabs when viewed from the top

A small ink dot on a paper is viewed through a glass slab of thickness 10 cm , and refractive index 1.5 . By what distance would the dot appear to be raised ?

A small ink dot on a paper is viewed through a glass slab of thickness 10cm and refractive index 1.5. By what distance would the dot appear to be raised?

If the absolute refractive index of glass is 1.5 and that of water is (4)/(3) , find the refractive index of water with respect to glass.

An object is placed at the bottom of a tank filled with liquid of refractive index 1.6. If the actual depth of the tank is 10 cm, what will be the apparent depth of the object?

If the refractive index of a certain glass with respect to water is 1.25 , find the refractive index of water with respect to the glass.

SL ARORA-RAY OPTICS-Problems
  1. A point source of light S is placed at the bottom of a vessel containi...

    Text Solution

    |

  2. A ray of light travelling in glass (mug=3//2) is incident on a horizon...

    Text Solution

    |

  3. A rectangular glass block of thickness 10 cm and refractive index 1.5 ...

    Text Solution

    |

  4. A ray of light travelling in air is incident at grazing angle (incide...

    Text Solution

    |

  5. A right angled prism is to be made by selecting a proper material and ...

    Text Solution

    |

  6. A right angles prism (45^(@),90^(@), 45^(@)) of refractive index n ha...

    Text Solution

    |

  7. Light is incident at an angle alpha on one planar end of a transparent...

    Text Solution

    |

  8. A rod of glass ( mu = 1.5) and of square cross section is bent into t...

    Text Solution

    |

  9. A slab of a material of refractive index 2 shown in fig. has a curved ...

    Text Solution

    |

  10. A parallel beam of light travelling in water (refractive index =4//3)...

    Text Solution

    |

  11. A glass sphere of radius 5 cm has a small bubble at a distance 2 cm fr...

    Text Solution

    |

  12. A plano-convex lens has thickness 4cm. When places on a horizontal tab...

    Text Solution

    |

  13. Two point light sources are 24 cm apart. Where should a convex lens of...

    Text Solution

    |

  14. A convex lens and a convex mirror of radius of curvature 20 cm are pla...

    Text Solution

    |

  15. Consider a coaxial system of two thin convex lenses of focal length f ...

    Text Solution

    |

  16. A thin plano-convex lens of focal length f is split into two halves. O...

    Text Solution

    |

  17. Two thin similar convex glass are joined together front to front, with...

    Text Solution

    |

  18. The redius of curvature of the convex face of a plano-convex lens is 1...

    Text Solution

    |

  19. The convex surface of a thin concavo-convex lens of glass of refractiv...

    Text Solution

    |

  20. A small fish, 0.4m below the surface of a lake, is viewed through a si...

    Text Solution

    |