Home
Class 12
PHYSICS
For a parallel beam of monochromatic. Li...

For a parallel beam of monochromatic. Light of wavelength `'lamda'` diffraction is produced by a single slit whose width 'a' is of the order of the wavelength of the lightl. If 'D' is the distance of the screen from the slit, the width of the central maxima will be

A

`(2Dlamda)/a`

B

`(Dlamda)/a`

C

`(Da)/(lamda)`

D

`(2Da)/(lamda)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR PHYSICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|89 Videos

  • OSCILLATIONS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise Exercise|50 Videos
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-OPTICS AND OPTICAL INSTRUMENTS-All Questions
  1. A linear aperture whose width is 0.02cm is placed immediately in front...

    Text Solution

    |

  2. Two identical thin planoconvex glass lenses (refractive index 1.5) eac...

    Text Solution

    |

  3. For a parallel beam of monochromatic. Light of wavelength 'lamda' diff...

    Text Solution

    |

  4. In a double slit experiment, the two slits are 1mm apart and the scree...

    Text Solution

    |

  5. The refracting angle of a prism is A, and refractive index of the mate...

    Text Solution

    |

  6. In an astronomical telescope in normal adjustment a straight black lin...

    Text Solution

    |

  7. Two slits in Youngs experiment have widths in the ratio 1: 25.h The ra...

    Text Solution

    |

  8. A beam of light consisting of red, green and blue colours is incident ...

    Text Solution

    |

  9. The Young's modulus of steel is twice that of brass. Two wires of the ...

    Text Solution

    |

  10. Light with an enargy flux of 25xx10^(4) Wm^(-2) falls on a perfectly r...

    Text Solution

    |

  11. A beam of light of lamda=600 nm from distant source falls on a single ...

    Text Solution

    |

  12. In a Young's double slit experiment the intensity at a point where tha...

    Text Solution

    |

  13. Angle of prism is A and its one surface is silvered. Light rays fallin...

    Text Solution

    |

  14. A plano-convex lens fits exactly into a plano-concave lens. Their plan...

    Text Solution

    |

  15. For a normal eye, the cornea of eye provides a converging power of 40 ...

    Text Solution

    |

  16. In Young's double-slit experiment, the slits are 2mm apart and are ill...

    Text Solution

    |

  17. When a biconvex lens of glass having refractive index 1.47 is dipped i...

    Text Solution

    |

  18. A ray of light is incident at small angle I on the surface of prism of...

    Text Solution

    |

  19. A concave mirrorr of focal length f(1) is placed at a distance of d fr...

    Text Solution

    |

  20. The magnifying power of a telescope is 9. When it is adjusted for para...

    Text Solution

    |