Home
Class 12
PHYSICS
A mixture of light, consisting of wavele...

A mixture of light, consisting of wavelength 590 nm and an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping interference patterns on the screen. The central maximum of both lights coincide. Further, it is observed that the third bright fringe of known light coincides with the `4^(th)` bright fringe of the unknown light. From this data, the wavelength of the unknown light is

A

`885.0 nm`

B

`442.5 nm`

C

`776.8 nm`

D

`393.4 nm`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -II (DIFFRACTION)|17 Videos

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -II (POLARISATION)|10 Videos

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -IB (ASSERTION AND REASON)|67 Videos

  • WAVES

    AAKASH SERIES|Exercise EXERCISE-III (Doppler effect :)|15 Videos

Similar Questions

Explore conceptually related problems

A micture of light, consisting of wavelength 590nm and an unknown wavelength, illuminates Young's double slit and gives rise to two overlapping interference patterns on the scree. The central maximum of both lights coincide. Further, it is obseved that the third bright fringe of known light coincides with the 4th bright fringe of the unknown light. From this data, the wavelength of the unknown light is:

A beam of light consisting of two wavelength, 650 nm and 520 nm, is used to obtain interference fringes in a Young's double - slit experiment. Find the distance of the third bright fringe on the screen from the central maximum for wavelengths 650 nm.

Two sources of light of wavelengths 2500 Å and 3500 Å are used in Young’s double slit expt. simultaneously. Which orders of fringes of two wavelength patterns coincide?

Two sources of light of wavelengths 2500 Å and 3500 Å are used in Young’s double slit expt. simultaneously. Which orders of fringes of two wavelength patterns coincide?

A beam of light consisting of two wavelengths 650 nm and 520 nm is used to obtain interference fringes in a Young's double slit experiment. (a) Find the distance of the third bright fringe on the screen from the central maximum for the wavelength 650 nm . (b) What is the least distance from the central maximum where the bright fringes due to both the wavelengths coincide? The distance between the slits is 2 mm and the distance between the plane of the slits and screen is 120 cm .

In Young's double-slit experiment, the slit are 0.5 mm apart and the interference is observed on a screen at a distance of 100 cm from the slits, It is found that the ninth bright fringe is at a distance of 7.5 mm from the second dark fringe from the center of the fringe pattern. The wavelength of the light used in nm is

Following figure shows the positions of the first bright fringes B_(1)andB_(2) on either side of the central bright fringe O in Young.s double slit experiment. Find the wavelength of monochromatic light used.

A beam of light consisting of two wavelengths, 650 nm and 520 nm is used to obtain interference fringes in Young's double-slit experiment. What is the least distance (in m) from a central maximum where the bright fringes due to both the wavelengths coincide ? The distance between the slits is 3 mm and the distance between the plane of the slits and the screen is 150 cm.

A beam of light consisting of two wavelengths 6500A^(0)" and "5200A^(0) is used to obtain interference fringes in a Young's double slit experiment. Find the distance of the third bright fringe on the screen from the central maximum for wavelength 6500A^(0) . The distance between the slits is 2mm and the distance between the plane of the slits and the screen is 120 cm.

A beam of light consisting of two wavelength , 6500 A^(@) and 5200 A^(@) is used to obtain interference fringes in a Young's double slit experiment (1Å = 10^(-10)m) . The distance between the slits 2.0 mm and the distance between the plane of the slits and the screen is 120 cm. Find the distance of the third bright fringe on the screen from the central maximum for the wavelength 6500 Å .

AAKASH SERIES-WAVES OPTICS-EXERCISE -II (INTERFERENCE)
  1. In an interference experiment, the ratio of the intensities of the bri...

    Text Solution

    |

  2. A screen is at a distance of 2m from narrow slits that are illuminated...

    Text Solution

    |

  3. In Young's double slit experiment with a mono - chromatic light of wav...

    Text Solution

    |

  4. In Young.s double slit interference experiment the wavelength of ligh...

    Text Solution

    |

  5. The intensity of central fringe in the interference pattern produced b...

    Text Solution

    |

  6. In the case of interference, the maximum and minimum intensities are i...

    Text Solution

    |

  7. In a double slit experiment, the distance between two slits in 0.6 mm ...

    Text Solution

    |

  8. In Young.s double slit experiment, blue-green light of wavelength 500n...

    Text Solution

    |

  9. A double slit experiment is performed with light of wavelength 500 nm....

    Text Solution

    |

  10. When a mica plate of thickness 0.1mm is introduced in one of the inter...

    Text Solution

    |

  11. The maximum numbers of possible interference maxima for slit separatio...

    Text Solution

    |

  12. An electromagnetic wave emitted by source travels 21 km to arrive at a...

    Text Solution

    |

  13. Four light sources produce the following four waves : i. y1 = a' si...

    Text Solution

    |

  14. In Young's double slit experiment, the 10^(th) maximum of wavelength ...

    Text Solution

    |

  15. The path difference between two interfering waves at a point on the sc...

    Text Solution

    |

  16. In Young.s double slit experiment with monochromatic source of light o...

    Text Solution

    |

  17. A mixture of light, consisting of wavelength 590 nm and an unknown wav...

    Text Solution

    |

  18. A monochromatice light beam of wavelength 5896 A^(0) is used in double...

    Text Solution

    |

  19. The maximum intensity in Young.s double slit experiment is I0. Distanc...

    Text Solution

    |

  20. Young's double slit experiment is first performed in air and then in a...

    Text Solution

    |