Home
Class 12
PHYSICS
Assertion : The images formed by total i...

Assertion `:` The images formed by total internal reflections are much brighter than those formed by mirrors or lenses.
Reason `:` There is no loss of intensity in total internal reflection.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false.

D

If assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
In total internal reflection, `100%` of incident light is reflected back into the same medium, and there is no loss of intensity, while in reflection from mirrorrs and refraction from lenses, there is always some loss of intensity. Therefore images formed by total internal reflection are much brighter than those formed by mirrorrs or lenses.
Promotional Banner

Topper's Solved these Questions

  • GEOMETRICAL OPTICS

    A2Z|Exercise AIPMT/NEET Questions|95 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Assertion Reason|15 Videos

  • GEOMETRICAL OPTICS

    A2Z|Exercise Problems Based On Mixed Concepts|37 Videos

  • ELECTROMAGNETIC WAVES AND COMMUNICATION SYSTEM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • MAGNETISM AND MATTER

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion:- Images formed by TIR (Total internal reflection) are much brighter than formed by mirrors or lenses. Reason:- IN TIR, there is no loss of intensity while in case of reflection from mirrors or refraction from plane surfaces or lenses there is some loss of intensity as all light can never be reflected or refracted.

Define total internal reflection of light.

Total internal reflection and critical angle

Conditions Of Total Internal Reflection

Write the conditions for total internal reflection.

Total internal reflection can take only if

For total internal reflection, light must travel

A2Z-GEOMETRICAL OPTICS-Section B - Assertion Reasoning
  1. Assertion: When an object is placed between two plane parallel mirrors...

    Text Solution

    |

  2. Assertion : The size of the mirror affect the nature of the image. ...

    Text Solution

    |

  3. Assertion : Just before setting, the sun may appear to be elliptical. ...

    Text Solution

    |

  4. Assertion : Critical angle of light passing from glass to air is minim...

    Text Solution

    |

  5. Assertion : A piece of red glass is heated till it glows in dark. The ...

    Text Solution

    |

  6. Assertion : Within a glass slab, a double convex air bubble is formed....

    Text Solution

    |

  7. Assertion : The images formed by total internal reflections are much b...

    Text Solution

    |

  8. Assertion : The focal length of the lens does not change when red ligh...

    Text Solution

    |

  9. Assertion : There is no dispersion of light refracted through a rectan...

    Text Solution

    |

  10. Assertion : All the materials always have the same colour, whether vie...

    Text Solution

    |

  11. Assertions : A beam of white light give a spectrum on passing through ...

    Text Solution

    |

  12. Assertion : By increasing the diameter of the objective of telescope,...

    Text Solution

    |

  13. Assertion : If objective and eye lenses of a microscope are interchang...

    Text Solution

    |

  14. Assertion : The illuminance of an image produced by a convex lens is g...

    Text Solution

    |

  15. Assertion : Although the surfaces of a goggle lens are curved, it does...

    Text Solution

    |

  16. Assertion : If the angles of the base of the prism are equal, then in ...

    Text Solution

    |

  17. Assertion : Dispersion of light occurs because velocity of light in a ...

    Text Solution

    |

  18. Assertion : An empty test tube dipped into water in a beaker appears s...

    Text Solution

    |

  19. Assertion : Spherical aberration occur in lenses of larger aperture. ...

    Text Solution

    |