Home
Class 12
PHYSICS
In Young's double slit experiment, we ge...

In Young's double slit experiment, we get 15 fringes per cm on the screen, using light of wavelength 5600 Å. For the samme setting, how many fringes per cm will be obtained with light of wavelength 7000 Å?

A

10

B

12

C

15

D

18

Text Solution

Verified by Experts

The correct Answer is:
B
`(X_(2))/(X_(1))=(lamda_(2))/(lamda_(2))" "therefore (X_(2))/(1//15)=(5)/(4)`
`15X_(2)=(5)/(4)" "therefore X_(2)=(1)/(12)cm`
`therefore`No. off fringes per cm=12.
Promotional Banner

Topper's Solved these Questions

  • INTERFERENCE AND DIFFRACTION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|20 Videos

  • GRAVITATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP -2|20 Videos

  • KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 9|30 Videos

Similar Questions

Explore conceptually related problems

In Young's double-slit experiment , we get 60 fringes in the field of view if we use light of wavelength 4000 Å . The number of fringes we will get in the same field of view if we use light of wavelength 6000 Å is

In Young,s double slit experimentm, 60 fringes are observed in the central view zone with light of wavelength 4000Å , The number of fringes that will be observed in the same view zone with the light of wavelength 6000Å , is

In standard Young's double-slit experiment, 9 fringes are found to be formed in a portion of screen. Wavelength of light used is 600 nm. How many fringes will be formed in the same portion of screen if wavelength of light is changed to 450 nm?

In Young's double slit experiment, we get 60 fringes in the field of view of monochromatic light of wavelength 4000Å . If we use monochromatic light of wavelength 6000Å , then the number of fringes obtained in the same field of view is

In Young's double slit experiment, we get 10 fringes in the field of view of monochromatic light of wavelength 4000Å. If we use monochromatic light of wavelength 5000Å, then the number of fringes obtained in the same field of view is

In Young's double slit experiment, the fringe width with light of wavelength 6000 Ã… is 3 mm. The fringe width, when the wavelength of light is changed to 4000 Ã… is

In Young's double slit experiment, angular width of fringes is 0.20^@ for sodium light of wavelength 5890Å . If complete system is dipped in water, then angular width of fringes becomes

In Young's double slit experiment, angular width of fringes is 0.20^(@) for sodium light of wavelength 5890 Å. If the complete system is dipped in water, then the angular width of fringes will become

In a Young's double slit experiment , the slits are Kept 2mm apart and the screen is positioned 140 cm away from the plane of the slits. The slits are illuminatedd with light of wavelength 600 nm. Find the distance of the third brite fringe. From the central maximum . in the interface pattern obtained on the screen frings from the central maximum. 3

MARVEL PUBLICATION-INTERFERENCE AND DIFFRACTION-TEST YOUR GRASP
  1. In Young's double slit experiment, we get 15 fringes per cm on the scr...

    Text Solution

    |

  2. Two waves having the intensities in the ratio of 9 : 1 produce interfe...

    Text Solution

    |

  3. A point P is situated at 40.1 cm and 40.2 cm away from two coherent so...

    Text Solution

    |

  4. Two coherent monochromatic light beams of intensities I and 4I are sup...

    Text Solution

    |

  5. In Young's double slit experiment carried out with wavelength lamda=50...

    Text Solution

    |

  6. In Young's experiment, interference fringes are obtained on a screen p...

    Text Solution

    |

  7. In a young's double slit experiment, one of the slits is covered by a ...

    Text Solution

    |

  8. In Young's double slit experiment, the two slits are at a distance 'd'...

    Text Solution

    |

  9. In Youngs 's double slit experiment, the fringe width obtained by usin...

    Text Solution

    |

  10. In Young's double slit experiment, the maximum intensity is I(0). What...

    Text Solution

    |

  11. In a biprism experiment the band width is 0.4 mm when the eye piece is...

    Text Solution

    |

  12. In a biprism experiment, the distance between the consecutive bright b...

    Text Solution

    |

  13. Microwave ocillators S(1) and S(2) are used to show interference of el...

    Text Solution

    |

  14. Two sources of light P and Q have wavelengths 6000 Å and 5500 Å respec...

    Text Solution

    |

  15. Light of wavelength 5000 Å, illuminates the slit in a biprism experime...

    Text Solution

    |

  16. A diffraction patter is obtained by making lbue light incident on a na...

    Text Solution

    |

  17. Light of wavelength lambda is incident on a slit of width d and distan...

    Text Solution

    |

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

    Text Solution

    |

  19. In a Fraunhoffer diffraction at single slit of width 'a' with incident...

    Text Solution

    |

  20. By using light of wavelength 5200 Å, two points separated by a distanc...

    Text Solution

    |

  21. What is the resolving power of a telescope whose objective lens has a ...

    Text Solution

    |