Home
Class 12
PHYSICS
In an interference experiment, third bri...

In an interference experiment, third bright fringe is obtained at a point on the screen with a light of 700 nm . What should be the wavelength of the light source in order to obtain 5th bright fringe at the same point

A

630 mm

B

500 mm

C

420 mm

D

750 mm

Text Solution

Verified by Experts

The correct Answer is:
C
`lamda_(1)=700nm,n_(1)=3n_(2)=5,lamda=?`
For same path diff.
`n_(1)lamda_(1)=n_(2)lamda_(2)`
`lamda_(2)=(n_(1)lamda_(1))/(n_(2))=(3xx700)/(5)=420nm`
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    NIKITA PUBLICATION|Exercise Multiple Choice Questions|409 Videos

  • KINETIC THEORY OF GASES & RADIATION

    NIKITA PUBLICATION|Exercise MCQs (Question Given in MHT-CET)|79 Videos

Similar Questions

Explore conceptually related problems

In the interference pattern obtained in a biprism experiment, 5th order bright fringe is obtained at a point on the screen, when monochromatic light of wavelength 6000 Å is used. What is the order of the bright fringe produced at the samme point, if the light of wavelength 5000 Å is used?

In a biprism experiment, using monochromatic lightof wavelength 6000 Å, 8th bright band is obtained at a point on the screen. What is the wavelength of the another source, which produces the 12th bright band at the samme point?

In a Young’s double slit experiment, 16 fringes are observed in a certain segment of the screen when light of wavelength 700 nm is used. If the wavelength of light is changed to 400 nm, the number of fringes observed in the same segment of the screen would be:

In Young's double slit experiment, red light of wavelength of 6000Å is used and the n^(th) bright fringe is obtained at a ponit P on the screen. Keeping the same setting, the source of light is replaced by green light of wavelength 5000Å and now (n+1)^(th) bright fringe is obtained at the point P on the screen. The value of n is

A monochromatic light beam of wavelength 5896Å is used in double slit experiment to get interference patter on a screen. 9th bright fringe is seen at a particular position on the screen. At the same point on the screen. If 11th bright fringe is to be seen, the wave length of the light that is needed is (nearly)

Coherent light with wavelength 600nm passes through two very narrow slits and the interference pattern is observed on a screen 3.00 m from the slits. The first order bright fringe is at 4.94 mm from the centre of the central bright fringe. For what wavelength of light will the first order dark fringe be observed at this same point on the screen?

Red light of wavelength 6000 Å is used in a Young's double-slit experiment. At a point P on the screen n^(th) bright fringe is obtained . When red light is replaced with blue light of wavelengh 4000 Å, ( n + 1)^(th) bright fringe is obtained at the same point P. Calculate the value of n.

In Young's double slit experiment, 5th dark fringe is obtained at a point. If a thin transparent film is placed in the path of one of waves, then 7th bright is obtained at the same point. The thickness of the film in terms of wavelength lambda and refractive index mu will be

NIKITA PUBLICATION-INTERFERENCE AND DIFFRACTION-MULTPLE CHOICE QUESTIONS
  1. A double slit experiment is performed with light of wavelength 500nm. ...

    Text Solution

    |

  2. Polarization oflight takes place due to many process. Wchih of the fol...

    Text Solution

    |

  3. In an interference experiment, third bright fringe is obtained at a po...

    Text Solution

    |

  4. The slit width, when a light of wavelenght 6500Å is incident on a slit...

    Text Solution

    |

  5. If two waves represented by y(1)=4 sin omega t and y(2)=3sin (omega t+...

    Text Solution

    |

  6. In Young's experiment the ratio of intensity at the maxima and minima ...

    Text Solution

    |

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

    Text Solution

    |

  8. If an interference pattern have maximum and minimum intensities in 36:...

    Text Solution

    |

  9. The biprism experiment is performed by using first the blue light of w...

    Text Solution

    |

  10. In Young's double slit experiment the widht of one slit is double tha...

    Text Solution

    |

  11. In Young's double-slit experiment the angular width of a fringe formed...

    Text Solution

    |

  12. The path difference produced by two waves is 3.75 mum and the waveleng...

    Text Solution

    |

  13. In a Young's double slit experiment set up, slits are kept 0.4 mm apa...

    Text Solution

    |

  14. In the Young's experiment, one of the slit is covered with a transpare...

    Text Solution

    |

  15. If the ratio of amplitude of two waves is 4:3, then the ratio of maxim...

    Text Solution

    |

  16. If a torch is used in place of monochromatic light in Young's experime...

    Text Solution

    |

  17. Fringes are produced with monochromatic light of wavelengths 4.45xx10^...

    Text Solution

    |

  18. In biprism experiment the fringe width is 0.30 mm. If slits are covere...

    Text Solution

    |

  19. A wavelength of light 5600Å produces 60 fringes. What will be the numb...

    Text Solution

    |

  20. Two sources of light P and Q have wavelengths 6000 Å and 5500 Å respec...

    Text Solution

    |