Home
Class 12
PHYSICS
Red light is generally used to observe d...

Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern

A

(a) Will be more clear

B

(b) Will contract

C

(c) Will expanded

D

(d) Will not be visualized

Text Solution

Verified by Experts

The correct Answer is:
B
`x_(Blue)ltlambda_(Red)`. Therefore fringe pattern will contract because fringe width `prop lambda`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    A2Z|Exercise Polarisation Of Light|37 Videos

  • WAVE OPTICS

    A2Z|Exercise Problems Based On Different Concepts|39 Videos

  • WAVE OPTICS

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • SOURCE AND EFFECT OF MAGNETIC FIELD

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

In a single slit diffraction pattern

In single slit diffraction pattern :

If red light is replaced by white light then width of diffraction pattern will

In a Fraunhofer diffraction at a single slit, if yellow light illuminating the slit is replaced by blue light, then diffraction bands

In the phenomenon of diffraction of light, when blue light is used in the experiment instead of red light , then

A single slit diffraction pattern is obtained using a beam of red light. If the red light is replaced by the blue light, then the diffraction pattern

In the laboratory, diffraction of light by a single slit is being observed. If slit is made slightly narrow, then diffraction pattern will-

Assertion (A) : We cannot observe diffraction pattern from a wide slit illuminated by monochromatic light Reason (R ) : In diffraction pattern, all the bright bands arenot of the same intensity.

A2Z-WAVE OPTICS-Young'S Double Slit Experiment
  1. In Fresnel diffraction, if the distance between the disc and the scree...

    Text Solution

    |

  2. A plane wavefront (lambda=6xx10^-7m) falls on a slit 0.4m wide. A conv...

    Text Solution

    |

  3. Red light is generally used to observe diffraction pattern from single...

    Text Solution

    |

  4. Conditions of diffraction is

    Text Solution

    |

  5. Light of wavelength 589.3nm is incident normally on the slit of width ...

    Text Solution

    |

  6. In a diffraction pattern by a wire, on increasing diameter of wire, fr...

    Text Solution

    |

  7. What will be the angular width of central maxima in Fraunhofer diffrac...

    Text Solution

    |

  8. If we observe the single slit Fraunhofer diffraction with wavelength l...

    Text Solution

    |

  9. A beam of light of wavelength 600nm from a distant source falls on a s...

    Text Solution

    |

  10. Direction of the first secondary maximum in the Fraunhofer diffraction...

    Text Solution

    |

  11. A parallel monochromatic beam of light is incident normally on a narro...

    Text Solution

    |

  12. A light wave is incident normally over a slit of width 24xx10^-5cm. Th...

    Text Solution

    |

  13. A parallel beam of monochromatic light of wavelength 5000Å is incident...

    Text Solution

    |

  14. In the far field diffraction pattern of a single slit under polychroma...

    Text Solution

    |

  15. Light of wavelength lambda=5000Å falls normally on a narrow slit. A sc...

    Text Solution

    |

  16. A single slit of width a is illuminated by violet light of wavelength ...

    Text Solution

    |

  17. In a single slit diffraction of light of wavelength lambda by a slit o...

    Text Solution

    |

  18. Angular width of central maxima in the Fraunhofer diffraction pattern ...

    Text Solution

    |

  19. In a single slit diffraction experiment first minimum for red light (6...

    Text Solution

    |

  20. The ratio of intensities of consecutive maxima in the diffraction patt...

    Text Solution

    |