Home
Class 12
PHYSICS
The angular width of central maximum is ...

The angular width of central maximum is `0.1^@` If the width of the single slit is `10^(-5)` m, then calculate the wavelength of light used.

Text Solution

Verified by Experts

`2 theta=0.1^@`
Condition for minimum `n lambda=d sin theta`
`lambda=(10^(-4)xxsin 0.05^@)/(10)=10^(-5)xx0.05`
or `lambda=5xx10^(-7)m=5000 overset(@)A`
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS WITH ANSWERS|11 Videos

  • SUPPLEMENTARY EXAMINATION QUESTION PAPER JULY 2017

    SUBHASH PUBLICATION|Exercise QUESTION|35 Videos

Similar Questions

Explore conceptually related problems

How does width of central maximum vary with the width of the slit used?

Express angular width of central maximum in terms of wavelength.

The width of central diffraction maximum when the width of the aperture increases will

In a Young.s slit experiment, the slits are separated by 0.24 mm and the screen is kept 160 cm from the slits. If the fringe width is measured to be 0.4 cm, calculate the wavelength of light used experiment. What would be the new value of the .fringe width., if for the same set up or the same wavelength light, the screen is moved, .inwards., i.e., towards the slits by 40 cm?

In Young's double slit experiment the slits are separated by 0.28mm and the screen is placed at a distance of 1.4m away from the slits. The distance between the central bright fringe and the fifth dark fringe is measured to be 1.35cm . Calculate the wavelength of the light used. Also find the fridge width if the screen is moved towards the slits by 0.4m , for the same experimental set up.

Give the expression for linear width of central maximum.

SUBHASH PUBLICATION-WAVE OPTICS-NUMERICALS WITH SOLUTIONS
  1. In an experiment with a microscope, light of wave length 4240 overset(...

    Text Solution

    |

  2. Calculate the resolving power of a microscope, whose limit of resoluti...

    Text Solution

    |

  3. The semi vertical angle subtended by two points of an object at the ob...

    Text Solution

    |

  4. If the limit of resolution of the eye is 1' of an arc then calculate i...

    Text Solution

    |

  5. A telescope of aperture 0.02 m is used to focus the two head lamps 1.2...

    Text Solution

    |

  6. A telescope of aperture 0.15 m is used to view two heavenly separated ...

    Text Solution

    |

  7. The angular width of central maximum is 0.1^@ If the width of the sing...

    Text Solution

    |

  8. Calculate the angular width of 2^(nd) secondary maximum and fourth dar...

    Text Solution

    |

  9. Refractive index of glass is 1.5. Find the polarising angle for air-gl...

    Text Solution

    |

  10. Polarising angle for water is 53 8'. Find the critical angle for air-w...

    Text Solution

    |

  11. Refractive index of glass is 1.5 and of diamond is 2.42. Calculate the...

    Text Solution

    |

  12. A ray of light is incident on the surface of a glass plate of R.I 1.55...

    Text Solution

    |

  13. If three fringes are missing in front of the double slit then express ...

    Text Solution

    |

  14. Calculate the semi angular width of the fifth bright fringe from the c...

    Text Solution

    |

  15. If the distance between the double slit and the screen is doubled and ...

    Text Solution

    |

  16. A bright fringe is formed in front of one of the double slits. What wi...

    Text Solution

    |

  17. A light of intensity 100 Wm^-2 strikes a film at 57^@. Find the intens...

    Text Solution

    |

  18. Two polaroid sheets are placed in such way that one is inclined at an ...

    Text Solution

    |

  19. A ray of light is incident on the surface of a glass plate of R.I 1.55...

    Text Solution

    |

  20. In a single slit diffraction experiment, the width of the slit is made...

    Text Solution

    |