Home
Class 12
PHYSICS
Light of wavelength 5500 Å is incident o...

Light of wavelength 5500 Å is incident on a slit of width 'a'. For what vlaue of 'a' the first minimum in the diffraction pattern falls at `30^(@)`?

A

`5.5xx10^(-6)m`

B

`7.5xx10^(-6)m`

C

`1.1xx10^(-6)m`

D

`1.3xx10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
C
`asintheta=lamda`
`therefore a=(lamda)/(sintheta)=(5500xx10^(-10))/(sin30^(@))`
`=11xx10^(-7)=1.1xx10^(-6)`m
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

Light of wavelength 600 nm is incident normally on a slit of width 0.2 mm. The angular width of central maxima in the diffraction pattern is

Light of wavelength 5000Å is incident over a slit of width 1 mu m . The angular width of central maxima will be

Light of wavelength 6328 Å is incident normally on a slit of width 0.2 mm. Angular width of the central maximum on the screen will be :

light of wavelength 600 nm is incident on a single slit. The first minimum of athe diffraction pattern is obtained at a distance of 4 m m from the centre. The distance between the screen and the slit is 2 m . What is the width of the slit ?

Light of wavelength 5000Å is incident normally on a slit. The first minimumof the diffraction pattern is formed at adistance of 5 mm from centra maximum. The screen is situated at a distance of 2 m from the slit. The slit width is

Light of wavelength 6000 A^(@) is incident on a single slit. The first minimum of the diffraction pattern is obtained at 4 mm from the centre. The screen is at a distance of 2 m from the silt. The slit width will be

Light of wavelength lambda is incident on a single sht of width. 'a' and the distance between slit and screen is 'a. In diffraction pattern, if slit width is equal to the width of the central maximum then 'O is equal to

Light of wavelength 6000Å is incident on a slit of width 0.30 mm. The screen is placed 2 m from the slit. Find (a) the position of the first dark fringe and (b). The width of the central bright fringe.

A plane wave of wavelength 6250Å is incident normally on a slit of width 2xx10^(-2) cm The width of the principal maximum of diffraction pattern on a screen at a distance of 50 cm will be

A Slit of width a is illuminated by monochromatic light of wavelength 650nm at normal incidence. Calculate the value of a when the first minimum falls at an angle of diffraction of 30^@

MARVEL PUBLICATION-INTERFERENCE AND DIFFRACTION-TEST YOUR GRASP
  1. Light of wavelength 5500 Å is incident on a slit of width 'a'. For wha...

    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

    |