Home
Class 12
PHYSICS
A Franhoffer diffraction pattern due to ...

A Franhoffer diffraction pattern due to a single slit of width 0.2 mm is being obtained on a screen placed at a distance of 2 m from the slit. The first minima lie at 5mm in either side of the centre maximum on the screen. Find the wavelength of the light used .

Text Solution

Verified by Experts

The correct Answer is:
5000 Å
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    SL ARORA|Exercise Based on Lloyd s Mirror and Fresnel Biprism|11 Videos

  • UNIVERSE

    SL ARORA|Exercise PROBLEM_TYPE|6 Videos

Similar Questions

Explore conceptually related problems

Light of wavelength 6 xx10^(-5) cm falls on screen at a distance of 100 cm from a narrow slit. Find the width of the slit if the first minima lies 1mm on either side of the central maximum

In Young's double slit experiment the slits are 0.5 mm apart and interference is observed on a screen placed at a distance of 100 cm from the slits. It is found that the 9^(th) bright fringe is at a distance of 8.835 mm from the second dark fringe from the centre of the fringe pattern. Find the wavelength of light used.

First diffraction minima due to a single slit of width 10^-4 cm is at theta=30^@ . The wavelength of the light used is –

Light of wavelength lambda is incident on a slit. First minima of the diffraction pattern is found to lie at a distance of 6 mm from the central maximum on a screen placed at a distance of 2 m from the slit. If slit width is 0.2 mm, then wavelength of the light used will be :

A screen is placed 2m away from the single narrow slit. Calculate the slit width if the first minimum lies 5 mm on either side of the central maximum. Incident plane waves have a wavelength of 5000 Å .

In Fraumhroffer diffraction pattern due to a single slit, the screen is at distance of 100 cm from the slit and slit is illuminated by lambda=5893Å . The width of the slit is 0.1 mm. Then separation between central maxima and the first secondary minima

In a single slit diffraction method, the distance between slit and screen is 1m . The size of the slit is 0.7mm and second maximum is formed at the distance of 2mm from the centre of the screen, then find out the wavelength of light.

In Fraunhofer diffraction pattern, slit width is 0.2 mm and screen is at 2 m away from the lens. If wavelength of light used is 5000 Å , then the distance between the first minimum on either side of the central maximum is ( theta is small and measured in radian)

SL ARORA-WAVE OPTICS-Based on Intensity Distribution in interference pattern
  1. a 0.02 m wide slit is illumijnated at normal incidence by light of wav...

    Text Solution

    |

  2. A parallel beam of light of wave length 6xx10^(-7)m falls normally on ...

    Text Solution

    |

  3. A Franhoffer diffraction pattern due to a single slit of width 0.2 mm ...

    Text Solution

    |

  4. A parralel beam of monochromatic light of wavelength 5000 Å is inciden...

    Text Solution

    |

  5. A beam of light of wavelength 590 nm is focused by a convex lens of di...

    Text Solution

    |

  6. A laser beam has a wavelength of 6xx10^(-7)m and aperture of 6xx10^(-2...

    Text Solution

    |

  7. A laser beam has a power of 100 mW. It has an aperture of 5xx10^(-3)m ...

    Text Solution

    |

  8. The width of an aperture is 4 mm and wavelength is 5000 Å. Calculate t...

    Text Solution

    |

  9. For what distance is ray optics a good approximation when the aperatur...

    Text Solution

    |

  10. Two tower are built on the hill 50 Km apart and then joining them pass...

    Text Solution

    |

  11. A diffraction has 5000 lines per cm. What is its grating element ?

    Text Solution

    |

  12. A parallel beam of monochromatic light is incident normally on a plane...

    Text Solution

    |

  13. Sodium light of wavelength 5890 Å is incident normally on a diffractio...

    Text Solution

    |

  14. The angle of diffraction of the second order maximum of wavelength 5xx...

    Text Solution

    |

  15. How many orders will be visible if the wavelength of the incident radi...

    Text Solution

    |

  16. In a grating experiment red line of wavelength 7000xx10^(-10)m in the ...

    Text Solution

    |

  17. A parallel beam of white light is incident normally on a diffraction g...

    Text Solution

    |

  18. A plane tansmission grating 6000 lines per cm is used to obtain a spec...

    Text Solution

    |

  19. If yellow light of 5890 Å is incident on a grating that has 850 lines ...

    Text Solution

    |

  20. Light froma galaxy, having wavelength of 6000 Å , if found to be shift...

    Text Solution

    |