Home
Class 12
PHYSICS
A very thin sheet of plastic having refr...

A very thin sheet of plastic having refractive index `mu=1.5` covers one slit of a double slit apparatus illuminated by 700 nm light . The central point on the screen , instead of being maximum , is dark . What is the possible thickness of the plastic in (nm) ?

A

700 nm

B

1400 nm

C

350nm

D

2100 nm

Text Solution

Verified by Experts

The correct Answer is:
A, D
Promotional Banner

Topper's Solved these Questions

  • TEST PAPERS

    ALLEN|Exercise MATHS|18 Videos

  • TEST PAPERS

    ALLEN|Exercise part-2 physic|48 Videos

  • TEST PAPER 4

    ALLEN|Exercise PHYSICS|45 Videos

  • UNIT & DIMENSIONS, BASIC MATHS AND VECTOR

    ALLEN|Exercise Exercise (J-A)|7 Videos

Similar Questions

Explore conceptually related problems

A thin perfectly transparent glass sheet of thickness t and refractive index mu is pasted on one of the two identical slits. If the intensity of light at the centre of the screen is I_(0) in the absence of glass sheet, the intensity at O as a function of thickness of the glass plate is

A transparent sheetof refractive index 1.5 is kept near one of the slits of the YDSE apparentus. The intenisity at the centre of the screen (where the central maximum was located before the introduction of the sheet) is half of the previous value. The minimum thickness of the sheet should be (wavelength of the monochromatic light used in the experiment is 6000 Å ) :

A thin mica sheet of thickness 4xx10^(-6) m and refractive index (mu=1.5) is introduced in the path of the light from upper slit. The wavelength of the wave used is 5000 Å The central bright maximum will shift

A thin glass plate of thickness is (2500)/3lamda ( lamda is wavelength of light used) and refractive index mu=1.5 is inserted between one of the slits and the screen in Young's double slit experiment. At a point on the screen equidistant from the slits, the ratio of the intensities before and after the introduction of the glass plate is :

A flake of glass (refractive index 1.5) is placed over one of the opening of a double-slit apparatus. The interference pattern displaced itself through seven successive maxima toward the side where the flake is placed. If wavelength of the light is lambda = 600 nm , then the thickness of the flake is

A flake of glass (refractive index 1.5) is placed over one of the openings of a double slit apparatus. The interference pattern displaces itself through seven succesive maxima towards the side where the flake is placed. If wavelength of the diffracted light is lambda=600nm , then the thickness of

A thin glass plate of thickness t and refractive index mu is inserted between screen and one of the slits in a young's experiment. If the intensity at the centre of the screen is I, what was the intensity at the same point prior to the introduction of the sheet.

A thin glass plate of thickness t and refractive index mu is between screen &one of the slits in young's experiment.if the intensity at the center of the screen is I ,was the intenstity at the same point prior to the introduction of the sheet. (b) One slit of a young's experiment is covered by a glass plate (mu_(1)=1.4) and the other by another glass plate (mu_(2)=1.7) of the same thickness. The point of central maxima of the screen,before the plates were introduced is now occupied by the third bright fringe.Find the thicknes of the thickness of the plates.the wavelength of light used in 4000Å .

ALLEN-TEST PAPERS-PHYSICS
  1. A block of mass m is hanging from a light string of length l . A bulle...

    Text Solution

    |

  2. A block of mass m is being pulled up the rough incline , inclined at a...

    Text Solution

    |

  3. If current passing through both the capacitors is zero , then charges ...

    Text Solution

    |

  4. In the given LCR series ciruit reading of voltmenter is 120V. The read...

    Text Solution

    |

  5. A uniform cylinder of mass m lies on a fixed plane inclined at a angle...

    Text Solution

    |

  6. When interference of light takes place

    Text Solution

    |

  7. The magnetic field in a certain cylindrical region is changing with ti...

    Text Solution

    |

  8. In the given figure balls A&B are released simultaneously , when str...

    Text Solution

    |

  9. A narrow pipe of length 2m is closed at one end. The velocity of sound...

    Text Solution

    |

  10. A very thin sheet of plastic having refractive index mu=1.5 covers one...

    Text Solution

    |

  11. The Fig. shows a string of equally placed beads of mass m, separated b...

    Text Solution

    |

  12. As shown in diagram initial charge on capacitor is zreo . Now switch ...

    Text Solution

    |

  13. Three musicians experiment with the Doppler affect . Musician A rides ...

    Text Solution

    |

  14. A wave equation which gives the displacement along the y- direction is...

    Text Solution

    |

  15. On an inclined plane making an angle theta with the horizontal plane, ...

    Text Solution

    |

  16. On an inclined plane making an angle theta with the horizontal plane, ...

    Text Solution

    |

  17. In the given circuit switch S(2) is Kept closed and S(1) is kept open ...

    Text Solution

    |

  18. In the given circuit switch S(2) is Kept closed and S(1) is kept open ...

    Text Solution

    |