Home
Class 12
PHYSICS
In Young's double slit experiment if the...

In Young's double slit experiment if the distance between two slits is equal to the wavelength of used light. Then the maximum number of bright fringes obtained on the screen will be ......

A

2

B

5

C

7

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
A
Condition for bright fringe (maxima)
`d sin theta= n lambda`
`:. Lambda sin theta= n lambda " " [ :. d= lambda]`
`:. Sin theta=n`
but `sin theta le1` here `n le 1`
`:.` Possible value of n is -1,0,1
`:.` Total three maxima will be obtained.
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    KUMAR PRAKASHAN|Exercise SECTION-C NCERT Exemplar Solution (Long Answer Type Questions)|5 Videos

  • SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS

    KUMAR PRAKASHAN|Exercise Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)|129 Videos

Similar Questions

Explore conceptually related problems

In Young's double slit experiment, if th distance between two slits is double of the wavelength of light used. Prove that maximum 5 bright fringes will be obtained on the screen.

In Young's double slit experiment, the distance between two slits is made three times then the fringe width will become ......

In a Young double slit experiment, the width of the source slit is increased then……

In a Young's double slit experiment, the separation between the two slits is d and the wavelength of the light is lamda . The intensity of light falling on slit 1 is four times the intensity of light falling on slit 2. Choose the correct choice (s).

In Young's slit experiment, if the distance between two slits is halved and the distance between the slits and the screen is doubled then the width of fringe will be.....

In a Young's experiment, the distance between two slits is 0.2 mm. If the wavelength of light used in this experiment is 5000 Å, then the distance of 3rd bright fringes from central maxima will be ......

The intensity at the maximum in a Young's double slit experiment is I_(0) . Distance between two slits is d=5 lambda where lambda is the wavelength of light used in the experiment. What will be the intensity in front of one of the slits on the screen placed at a distance D=10d ?

In Young's double slit experiment if monochromatic light is replaced by white light

In Young's double slit experiment the separation d between the slits is lambda mm, the wavelength of the light used is 5896 Å and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is 0.20^(@) . To increase the fringe angular width to 0.21^(@) (with same lambda . and D) the separation between the slits needs to change to .....

KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. In Young's double slit experiment, the intensity at a point P on the s...

    Text Solution

    |

  2. In a two tourmalines experiment, the polariser and analyser are crosse...

    Text Solution

    |

  3. In a arrangement of Young experiment the central fringe of interferenc...

    Text Solution

    |

  4. Two beams of light of intensity I(1), and I(2)interfere to give an int...

    Text Solution

    |

  5. In Young's double slit experiment if the width of 4^(th) bright fringe...

    Text Solution

    |

  6. The diameter of the pupil of human eye is 2.5 mm. Assuming the wavelen...

    Text Solution

    |

  7. Unpolarised light falls first on polarizer Pan then on analyzer A. If ...

    Text Solution

    |

  8. A plane polarized light is incident normally on a tourmaline plate. It...

    Text Solution

    |

  9. Light of wavelength lambda is incident on slit of width d. The resulti...

    Text Solution

    |

  10. If the wavelength of light is 4000 A, then the number of waves in 1 mm...

    Text Solution

    |

  11. Velocity of electromagnetic wave having wavelength 5000 Å in medium of...

    Text Solution

    |

  12. A diffraction pattern is formed by blue light, if blue light is replac...

    Text Solution

    |

  13. In Fraunhoffer diffraction by a single slit, the width of the slit is ...

    Text Solution

    |

  14. In Young's double slit experiment if the distance between two slits is...

    Text Solution

    |

  15. If the wavelength of light used is 6000 Å. The angular resolution of t...

    Text Solution

    |

  16. Match the terms in column I with those in column II

    Text Solution

    |

  17. Which of the following is wrong for interference fringes?

    Text Solution

    |

  18. A ray of light travelling in impure water is incident on a glass plate...

    Text Solution

    |

  19. In a Young double slit experiment, the width of the source slit is inc...

    Text Solution

    |

  20. V(radial) is considered…….when the source moves away from the observer...

    Text Solution

    |