Home
Class 12
PHYSICS
When polaroid is rotated intensity of li...

When polaroid is rotated intensity of light increases and decreases but never becomes zero, so we can say that incident light is .......

A

completely plane polarised

B

partially plane polarised

C

unpolarised

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
B
On the way of partially plane polarised light if polaroid is rotated, some light vectors are present in the emerging light so intensity can never be zero
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    KUMAR PRAKASHAN|Exercise SECTION-C NCERT Exemplar Solution (Long Answer Type Questions)|5 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos
KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. Equation showing relation between angle of polarisation and refractive...

    Text Solution

    |

  2. When ray of light is incident at 58^(@) glass plate, reflected light i...

    Text Solution

    |

  3. When polaroid is rotated intensity of light increases and decreases bu...

    Text Solution

    |

  4. Critical angle for a medium is sin^(-1) (0.6), then polarization angle...

    Text Solution

    |

  5. Ray of light moving in water incidents on glass plate. Reflected light...

    Text Solution

    |

  6. The angle of polarisation for any medium is 60^(@), what will be the c...

    Text Solution

    |

  7. An unpolarised beam of light of intensity l0 falls on a poloroid. The ...

    Text Solution

    |

  8. The unpolarised light is incident on polarisers placed above the other...

    Text Solution

    |

  9. Ordinary light incident on a glass slab at the polarizing angle suffer...

    Text Solution

    |

  10. A person finds that the sun rays reflected by the still surface of wat...

    Text Solution

    |

  11. Two nicol prisms are oriented with their principal planes making an an...

    Text Solution

    |

  12. Plane polarized light incidents on tourmaline plate. vecE vectors make...

    Text Solution

    |

  13. When light incidents on transparent medium at polarization angle, then...

    Text Solution

    |

  14. Ray incidents at 60^(@) and reflected ray gets completely polarized, t...

    Text Solution

    |

  15. A system is created by adjusting the five polaroids to touch each othe...

    Text Solution

    |

  16. When unpolarized light incidents on polarizer 3.14 rad/s angular speed...

    Text Solution

    |

  17. Two polaroids are in crossed situation and intensity of polarized ligh...

    Text Solution

    |

  18. The critical angular for a particular medium is sin^(-1)((3)/(5)) , th...

    Text Solution

    |

  19. What speed should a galaxy move with respect to us so that the sodium ...

    Text Solution

    |

  20. Two slits are made one millimetre apart and the screen is placed one m...

    Text Solution

    |