Home
Class 12
PHYSICS
Intensity at centre in YDSE is l(0) if o...

Intensity at centre in YDSE is `l_(0)` if one slit is covered. Then intensity at centre will be

A

`2I`

B

`5I`

C

`(5+2sqrt(2))I`

D

`(5+4sqrt(2))I`

Text Solution

Verified by Experts

The correct Answer is:
A
Location of the point `y=omega/4=(lambdaD)/(4d)`
`rArr Deltax=(yd)/D=lambda/4`
`rArr phi=(2pi)/lambda.Deltax=pi/2`
`because I_(R)=I_(1)+I_(2)+2sqrt(I_(1)I_(2))cosphi`
`:. 4I=2I+I_(2)+0`
`rArr I_(2)=2I`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    DC PANDEY ENGLISH|Exercise Assertion reason|8 Videos

  • WAVE OPTICS

    DC PANDEY ENGLISH|Exercise match column|4 Videos

  • WAVE OPTICS

    DC PANDEY ENGLISH|Exercise Check point|65 Videos

  • SOLVED PAPERS 2018

    DC PANDEY ENGLISH|Exercise JIPMER|22 Videos

Similar Questions

Explore conceptually related problems

The slits in a Young's double slit experiment have equal width and the source is placed symmetrically with respect to the slits. The Intensity at the central fringe is I_0 . If one of the slits is closed, the intensity at this point will be

In a Young's double-slit expriment using identical slits, the intensity at a bright fringe is I_(0). If one of the slits is now covered, the intensity at any point on the screen will be

In a YDSE with identical slits, the intensity of the central bright fringe is I_(0) . If one of the slits is covered, the intensity at the same point is

In Young's double slit experiment with light of wavelength lambda=600 nm , intensity of central fringe is I_(0) . Now one of the slit is covered by glass plate of refractive index 1.4 and thickness t= 5mum . The new intensity at the same point on screen will be :

In YDSE, both slits produce equal intensities on the screen. A 100% transparent thin film is placed in front of one of the slits. Now, the intensity on the centre becomes 75% of the previous intensity. The wavelength of light is 6000Å and refractive index of glass is 1.5. Thus, minimum thickness of the glass slab is

In a Young's double slit experiment, I_0 is the intensity at the central maximum and beta is the fringe width. The intensity at a point P distant x from the centre will be

In a Young's double slit experiment, I_0 is the intensity at the central maximum and beta is the fringe width. The intensity at a point P distant x from the centre will be

In a Young's double slit experiment, I_0 is the intensity at the central maximum and beta is the fringe width. The intensity at a point P distant x from the centre will be

A parrallel beam of light (lambda=5000Å) is incident at an angle alpha=30^(@) as shown in YDSE experiment. Intensity due to each slit at any point on screen in I_(0) . The distance between slits is 1mm. The intensity at central point O on the screen is KI_(0) . Find the value of K.

The maximum intensity of fringes in Young's experiment is I. If one of the slit is closed, then the intensity at that place becomes I_o . Which of the following relation is true?

DC PANDEY ENGLISH-WAVE OPTICS-taking it together
  1. In Young's double slit experiment the y-coordinates of central maxima ...

    Text Solution

    |

  2. In Young's double slit experiment, wavelength lambda=5000Å the distanc...

    Text Solution

    |

  3. A parallel beam of light of intensity I is incident on a glass plate. ...

    Text Solution

    |

  4. In the Young's double slit experiment, the intensities at two points P...

    Text Solution

    |

  5. A monochromatic beam of light fall on YDSE apparatus at some angle (sa...

    Text Solution

    |

  6. Figure shows a standard two slit arrangement with slits S(1), S(2). P(...

    Text Solution

    |

  7. In Young's double slit experiment, the two slits acts as coherent sour...

    Text Solution

    |

  8. In the ideal double-slit experiment, when a glass-plate (refractive in...

    Text Solution

    |

  9. In the standard Young's double slit experiment, the intensity on the s...

    Text Solution

    |

  10. In a Young's double slit experiment, D equals the distance of screen a...

    Text Solution

    |

  11. White light is used to illuminate the two slits in a Young's double sl...

    Text Solution

    |

  12. The intensity of each of the two slits in Young's double slit experime...

    Text Solution

    |

  13. In a double-slit experiment, fringes are produced using light of wavel...

    Text Solution

    |

  14. An interference is observed due to two coherent sources S1 placed at o...

    Text Solution

    |

  15. Intensity at centre in YDSE is l(0) if one slit is covered. Then inten...

    Text Solution

    |

  16. Two coherent light sources A and B are at a distance 3lambda from each...

    Text Solution

    |

  17. Two coherent sources separated by distance d are radiating in phase ha...

    Text Solution

    |

  18. Consider a ray of light incident from air onto a slab of glass (refrac...

    Text Solution

    |

  19. Two ideal slits S(1) and S(2) are at a distance d apart, and illuninat...

    Text Solution

    |

  20. For the given incident ray as shown in figure, the condition of total ...

    Text Solution

    |