Home
Class 12
PHYSICS
Oil floating on water looks cloured due ...

Oil floating on water looks cloured due to interference of light. What should be the approximate thickness of the film for such effects to be visible ?

A

100 Å

B

10000 Å

C

1 mm

D

1 cm

Text Solution

Verified by Experts

The correct Answer is:
B
For interference, thickness comparable to wavelength .ei . 10000 Å.
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS AND ELECTROMAGNETIC THEORY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Diffraction of Light)|20 Videos

  • WAVE OPTICS AND ELECTROMAGNETIC THEORY

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Polarization of Light)|17 Videos

  • WAVE OPTICS AND ELECTROMAGNETIC THEORY

    ERRORLESS|Exercise ASSERTION & REASON |27 Videos

  • RAY OPTICS

    ERRORLESS|Exercise Assertion & Reason|30 Videos

Similar Questions

Explore conceptually related problems

An oil flowing on water seems coloured due to interference. For observing this effect, the approximate thickness of the oil film should be

A parallel beam of light of wavelength 560 nm falls on a thin film of oil (refractive index = 1.4). What should be the minimum thickness of the film so that it strongly S4 T z reflects the light ?

Interference of light is the physcal effect which is produces due to the

A parallel beam of light of wavelenght 560 nm falls on a film of oil (refractive index =1.4 ). What should be the minimum thickness of the film so that it weakly transmits the light ?

A material having an index of refraction of 1.30 is used as an antireflective coating on a piece of glass (n = 1.50). What should be the minimum thickness of this film in order to minimize reflection of 500 nm light?

An oil film (n = 1.45) floating on water is illuminated by white light at normal incidence. The film is 280 nm thick. Find (a) the color or the light in the visible specturm most strongly reflected and (b) the color of the light in the specturm most strongly transmitted. Explain your reasoning.

A layer of oil 3 cm thick is floating on a layer of coloured water 5 cm thick. Refractive index of coloured water is 5//3 and the apparent depth of the two liquids appears to be 36//7 cm. Find the refractive index of oil.

What is the minimum thickness of thin film required for constructive interference in the reflected light through it ? (Given, the refractive index of the film =1.5, wavelength of the lilght incident on the film =600 nm.

ERRORLESS-WAVE OPTICS AND ELECTROMAGNETIC THEORY-NCERT BASED QUESTIONS (Young’s Double Slit Experiment and Biprism)
  1. Two ideal slits S(1) and S(2) are at a distance d apart, and illuninat...

    Text Solution

    |

  2. Two coherent sources separated by distance d are radiating in phase ha...

    Text Solution

    |

  3. In Young's double slit experiment, the phase difference between the li...

    Text Solution

    |

  4. Consider a ray of light incident from air onto a slab of glass (refrac...

    Text Solution

    |

  5. Consider Fraunhoffer diffraction pattern obtained with a single slit i...

    Text Solution

    |

  6. A parallel monochromatic beam of light is incident normally on a narro...

    Text Solution

    |

  7. In a Young's double slit experiment (slit distance d) monochromatic li...

    Text Solution

    |

  8. n Young's double slit experiment with sodium vapour lamp of wavelength...

    Text Solution

    |

  9. In Young's double slit experiment, distance between two sources is 0.1...

    Text Solution

    |

  10. The maximum intensity of fringes in Young's experiment is I. If one of...

    Text Solution

    |

  11. The intensity of the light coming from one of the slits in a Young's d...

    Text Solution

    |

  12. In the Young's double-slit experiment,the intensity of light at a poin...

    Text Solution

    |

  13. In a Young's double slit experiment the intensity of light at each sli...

    Text Solution

    |

  14. Oil floating on water looks cloured due to interference of light. What...

    Text Solution

    |

  15. In the Young's double slit experiment , a mica slip of thickness t and...

    Text Solution

    |

  16. A thin sheet of glass (refractive index 1.5) of thickness 6 microns, i...

    Text Solution

    |

  17. When one of the slits of Young's experiment is covered with a transpar...

    Text Solution

    |

  18. A monochromatic beam of light fall on YDSE apparatus at some angle (sa...

    Text Solution

    |

  19. In a double-slit experiment, fringes are produced using light of wavel...

    Text Solution

    |

  20. In Young's double slit experiment, the aperture screen distance is 2m....

    Text Solution

    |