Home
Class 12
PHYSICS
Calculate the semi angular width of the ...

Calculate the semi angular width of the fifth bright fringe from the central fringe.

Text Solution

Verified by Experts

For a constructive interference, `nlambda=d sin theta` for fifth bright fringe, `n=5.`
`sin theta=(5 lambda)/(d)`
`therefore theta=sin^(-1)((5lambda)/(d))`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS WITH ANSWERS|11 Videos

  • SUPPLEMENTARY EXAMINATION QUESTION PAPER JULY 2017

    SUBHASH PUBLICATION|Exercise QUESTION|35 Videos

Similar Questions

Explore conceptually related problems

To increase the angular width of interference fringes

The width of the diffraction fringe varies :

In young's double slit experiment distance between the slits is 0.5 mm. When the screen is kept at a distance of 100 cm from the slits, the distance of ninth bright fring from the centre of the fringe system is 8.835 mm. Find the wavelength of light used.

In a Young.s double slit experiment wave length of light used is 5000 A and distance between the slits is 2mm, distance from slits is 1m. Find fringe width and also calculate the distance of 7^(th) dark fringe from central birght fringe.

In a double-slit experiment the angular width of a fringe is found to be 0.2^(@) on a screen placed 1 m away. The wavelength of light used is 600 nm. What will be the angular width of the fringe if the entire experimental apparatus is immersed in water? Take refractive index of water to be 4/3.

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 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 two slits is 0.28mm and the screen is at a distance of 1.4m from the slits

Calculate the angular width of 2^(nd) secondary maximum and fourth dark fringe in the diffraction pattern obtained due to a single slit of width 10^(-5) m illuminated by a wavelength of light 541 nm.

A beam of light consisting of two wavelengths 800nm and 600nm is used to obtain the interference fringes in a Young's double slit experiment on a screen placed 1.4m away. If the two slits are separated by 0.28mm , calculate the least distance from the central bright maximum where the bright fringes of the two wavelengths coincide.

SUBHASH PUBLICATION-WAVE OPTICS-NUMERICALS WITH SOLUTIONS
  1. In an experiment with a microscope, light of wave length 4240 overset(...

    Text Solution

    |

  2. Calculate the resolving power of a microscope, whose limit of resoluti...

    Text Solution

    |

  3. The semi vertical angle subtended by two points of an object at the ob...

    Text Solution

    |

  4. If the limit of resolution of the eye is 1' of an arc then calculate i...

    Text Solution

    |

  5. A telescope of aperture 0.02 m is used to focus the two head lamps 1.2...

    Text Solution

    |

  6. A telescope of aperture 0.15 m is used to view two heavenly separated ...

    Text Solution

    |

  7. The angular width of central maximum is 0.1^@ If the width of the sing...

    Text Solution

    |

  8. Calculate the angular width of 2^(nd) secondary maximum and fourth dar...

    Text Solution

    |

  9. Refractive index of glass is 1.5. Find the polarising angle for air-gl...

    Text Solution

    |

  10. Polarising angle for water is 53 8'. Find the critical angle for air-w...

    Text Solution

    |

  11. Refractive index of glass is 1.5 and of diamond is 2.42. Calculate the...

    Text Solution

    |

  12. A ray of light is incident on the surface of a glass plate of R.I 1.55...

    Text Solution

    |

  13. If three fringes are missing in front of the double slit then express ...

    Text Solution

    |

  14. Calculate the semi angular width of the fifth bright fringe from the c...

    Text Solution

    |

  15. If the distance between the double slit and the screen is doubled and ...

    Text Solution

    |

  16. A bright fringe is formed in front of one of the double slits. What wi...

    Text Solution

    |

  17. A light of intensity 100 Wm^-2 strikes a film at 57^@. Find the intens...

    Text Solution

    |

  18. Two polaroid sheets are placed in such way that one is inclined at an ...

    Text Solution

    |

  19. A ray of light is incident on the surface of a glass plate of R.I 1.55...

    Text Solution

    |

  20. In a single slit diffraction experiment, the width of the slit is made...

    Text Solution

    |