Home
Class 12
PHYSICS
For the sustained interference of light,...

For the sustained interference of light, the necessary condition is that the two sources should

A

have constant phase difference

B

be narrow

C

be close to each other

D

of same amplitude

Text Solution

Verified by Experts

The correct Answer is:
A
Sustained interference means a interference pattern (arrangement of fringes) can not be change with time. It is only possible when the phase difference between waves at a point does not change with time.
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    ALLEN|Exercise Exercise 2 (Brain Teasures)|22 Videos

  • WAVE OPTICS

    ALLEN|Exercise Exercise 3 (Miscellaneous type Questions)|27 Videos

  • WAVE OPTICS

    ALLEN|Exercise Example 15|1 Videos

  • UNIT & DIMENSIONS, BASIC MATHS AND VECTOR

    ALLEN|Exercise Exercise (J-A)|7 Videos

Similar Questions

Explore conceptually related problems

During interference of light

When interference of light takes place

Diffraction and interference of light refers to -

Diffraction and interference of light refers to -

State the necessary conditions for the interference of two sound waves.

State necessary condition of iron corrosion.

State two necessary conditions for hearing a distance echo.

What is the necessary condition for hydrogen bonding?

Define interference. List the conditions of obtaining sustained interference.

State two conditions to obtain sustained interference of light. In young's double slit experiment, using light of wavelength 400 nm, interference fringes of width X are obtained. The wavelength of light is increased to 600 nm and the separation between the slits is halved. if one wants the observed fringe width on the screen to be the same in the two cases, find the ratio of the distance between the screen and the plane of the slits in the two arrangements.

ALLEN-WAVE OPTICS-Exercise 1 (Check your Grasp)
  1. Phenonmenon of interfernece is observed-

    Text Solution

    |

  2. Two coherent sources must have the same

    Text Solution

    |

  3. For the sustained interference of light, the necessary condition is th...

    Text Solution

    |

  4. If the ratio of the intensity of two coherent sources is 4 then the vi...

    Text Solution

    |

  5. Two monochromatic and coherent point sources of light are placed at a ...

    Text Solution

    |

  6. If the distance between the first maxima and fifth minima of a double-...

    Text Solution

    |

  7. In young's double slit experiment, the seperation between the slits is...

    Text Solution

    |

  8. In Young's double slit experiment using sodium light (lamda=5898Å) 92 ...

    Text Solution

    |

  9. In Young's experiment one slit is covered with a blue filter and the o...

    Text Solution

    |

  10. In the Young's double slit experiment , a mica slip of thickness t and...

    Text Solution

    |

  11. In Young's double slit experiment, if monochromatic light is replaced ...

    Text Solution

    |

  12. In a YDSE with identical slits, the intensity of the central bright fr...

    Text Solution

    |

  13. As shown in the right figure, a point light source is placed at distan...

    Text Solution

    |

  14. One of the two slits in YDSE is painted over, so that it transmits onl...

    Text Solution

    |

  15. InYDSE,how many maxima can be obtained on the screen if wavelength of ...

    Text Solution

    |

  16. In YDSE, the source placed symmetrically with respect to the slit is n...

    Text Solution

    |

  17. A light wave travels through three transparent materials of equal thic...

    Text Solution

    |

  18. In YDSE if a slab whose refractive index can be varied is placed in fr...

    Text Solution

    |

  19. In a double-slit experiment, instead of taking slits of equal width, o...

    Text Solution

    |

  20. A ray of light is incident on a thin film, As shown in figure, M and N...

    Text Solution

    |