Home
Class 12
PHYSICS
A single slit of width a is illuminated ...

A single slit of width a is illuminated by violet light of wavelength `400nm` and the width of the diffraction pattern is measured as y. When half of the slit width is covered and illuminated by yellow light of wavelength `600nm`, the width of the diffraction pattern is

A

The pattern vanishes

B

`y//3`

C

3y

D

None of the above

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs with One or More Options Correct|27 Videos

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems|28 Videos

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQ Single Option Correct|35 Videos

  • THERMODYNAMICS LAWS & SPECIFIC HEATS OF GASES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practice Exercise 3.4|11 Videos

  • WAVES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSE, INPhO & IPhO|135 Videos

Similar Questions

Explore conceptually related problems

The slit of width d is illuminated by light of wavelength 5000 Å . If Fresnel distance is 2 m . What is the slit width ?

A single slit of width 0.1mm is illuminated by parallel light of wavelength 6000Å, and diffraction bands are observed on a screen 40cm from the slit. The distance of third dark band from the central bright band is:

A single slit of width 0.20 mm is illuminated with light of wavelength 500 nm . The observing screen is placed 80 cm from the slit. The width of the central bright fringe will be

A single slit of width 0.20mm is illuminated with light of wavelength 500nm . The observing screen is placed 80cm from the slit. The width of the central bright fringe will be

In a single slit diffraction pattern the angular width of a central maxima is 30^(@) . When the slit is illuminated by light of wavelength 6000Å . Then width of the slit will be approximately given as :

A narrow slit is illuminated by a parallel beam of monochromatic light of wavelength lambda_(0) equals to 6000 A^(0) and the angular width of the central maxima in the resulting diffraction pattern is measured.When the slit is next illuminated by light of wavelength lambda ,the angular width decreases to half.Calculate the value of the wavelength lambda .

A slit of width d is illuminated by red light of wavelength 6500Å For what value of d will the first maximum fall atangle of diffractive of 30^(@)

Angular width of central maxima is pi//2 , when a slit of width 'a' is illuminated by a light of wavelength 7000 Å then a =

PHYSICS GALAXY - ASHISH ARORA-WAVE OPTICS-Numerical MCQs Single Options Correct
  1. Two stars are situated at a distance of 8 light years from the earth. ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  4. A beam of natural light falls on a system of 5 polaroids, which are ar...

    Text Solution

    |

  5. When the angle of incidence on a material is 60^(@), the reflected lig...

    Text Solution

    |

  6. A double slit experiment is done with monochromatic light of wavelengt...

    Text Solution

    |

  7. A ray of light is incident on a medium boundry at polarising angle suc...

    Text Solution

    |

  8. If the polarizing angle of a piece of glass for green light is 54.74^(...

    Text Solution

    |

  9. In Young's double slit experiment the light emitted from source has la...

    Text Solution

    |

  10. In Young's double slit experiment, if the slit widths are in the ratio...

    Text Solution

    |

  11. A light source approaches the observer with velocity 0.5 cm. Doppler s...

    Text Solution

    |

  12. A plane monochromatic light falls normally on a diaphragm with two nar...

    Text Solution

    |

  13. In a single slit diffraction pattern the angular width of a central ma...

    Text Solution

    |

  14. Light of wavelength 6000 A^(@) is incident on a single slit. The first...

    Text Solution

    |

  15. If velocity of a galaxy relative to earth is 1.2 xx 10^(6)ms^(-2) then...

    Text Solution

    |

  16. Light of wavelength 5000Å is incident normally on a slit. First minimu...

    Text Solution

    |

  17. Doppler shift for the light of wavelength 6000Å emitted from the sun i...

    Text Solution

    |

  18. A thin mica sheet of thickness 2xx10^-6m and refractive index (mu=1.5)...

    Text Solution

    |

  19. A radar operates at wavelength 50.0 cm. If the beat frequency between ...

    Text Solution

    |

  20. A parallel beam of light of wavelength 6000Å gets diffracted by a sing...

    Text Solution

    |