Home
Class 12
PHYSICS
Statement-1: No interference pattern is ...

Statement-1: No interference pattern is detercted when two coherent sources are infinitely close to each other.
Statement-2: The fringe width is inversely proportional to the distance between the two slits.

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true and R is not the correct explanation of A

C

A is true and R is false

D

Both A and R are false

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -II (INTERFERENCE)|26 Videos

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -II (DIFFRACTION)|17 Videos

  • WAVES OPTICS

    AAKASH SERIES|Exercise EXERCISE -IA (ASCENDING AND DSCENDING ORDER TYPE QUESTIONS)|6 Videos

  • WAVES

    AAKASH SERIES|Exercise EXERCISE-III (Doppler effect :)|15 Videos

Similar Questions

Explore conceptually related problems

Assertion (A) : No interfrence pattern is detected when two coherent sources are very closer to each other. (i.e separation almost zero) Reason (R ) : The fringe width is inversely proportional to the distance between the two slits

The two coherent sources with intensity ratio beta produce interference. The fringe visibility will be

A : When the coherent sources are far apart, interference pattern cannot be detected. R : If two point coherent sources are infinitely close to each other, firinges appears very sharp.

Consider an interference pattern between two coherent sources. If I_1 and I_2 be intensities at points where the phase difference are pi/3 and (2pi)/3 and respectively , then the intensity at maxima is

Statement-1: In Young's double slit experiment the two slits are at distance d apart. Interference pattern is observed on a screen at distance D from the slits. At a poit on the screen when it is directly opposite to one of the slits, a dard fringe is observed then the wavelength of wave is proportional of square of distance of two slits. Statement-2: In Young's double slit experiment, for identical slits, the intensity of a dark fringe is zero.

Statement I: An electron beam is used to obtain interference in a simple Young's double-slit experiment arrangement with appropriate distance between the slits. If the speed of electrons in increased, the fringe width decreases. Statement II: de Broglie wavelength of electron is inversely proportional to the speed of the electrons.

Statement I: In Young's double-slit experiment, the two slits are at distance d apart. Interference pattern is observed on a screen at distance D from the slits. At a point on the screen which is directly opposite to one of the slits, a dark fringe is observed. Then, the wavelength of wave is proportional to the squar of distance between two slits. Statement II: For a dark fringe, intensity is zero

In a YDSE experiment, the distance between the slits & the screen is 100 cm . For a certain distance between the slits, an interference pattern is observed on the screen with the fringe width 0.25 mm . When the distance between the slits is increased by Deltad=1.2 mm, the fringe width decreased to n=2//3 of the original value. In the final position, a thin glass plate of refractive index 1.5 is kept in front of one of the slits & the shift of central maximum is observed to be 20 fringe width. Find the thickness of the plate & wavelength of the incident light.

Statement-I : In Young's double slit experiment interference pattern dissappears when one of the slits is closed Statement-II : Interference is observed due to superposition of light waves from two coherent source

Statement-I : In Young's double slit experiment interference pattern dissappears when one of the slits is closed Statement-II : Interference is observed due to superposition of light waves from two coherent source

AAKASH SERIES-WAVES OPTICS-EXERCISE -IB (ASSERTION AND REASON)
  1. A : The direction of a light is always perpendicular to wavefront R...

    Text Solution

    |

  2. A : Light from two coherent sources is reaching the screen. If the pat...

    Text Solution

    |

  3. Statement-1: No interference pattern is detercted when two coherent so...

    Text Solution

    |

  4. A : Interference obey is the law of conservation energy. R : The ene...

    Text Solution

    |

  5. A : In interference, the fringe obtained at the centre of the screen i...

    Text Solution

    |

  6. A : If the phase difference between the light waves emerging from the ...

    Text Solution

    |

  7. A : In Young.s double slit expriment the band width for red colour is ...

    Text Solution

    |

  8. A : In Young.s interference experiment the incident light used is whit...

    Text Solution

    |

  9. A : If the whole apparatus of Young.s experiment is immersed in liquid...

    Text Solution

    |

  10. A : In Y.D.S.E., if distance of screen (D) is very large compared to t...

    Text Solution

    |

  11. A : Light added to light can produce darkness. R : The destructive i...

    Text Solution

    |

  12. A : In Young.s double slit experiment, we observe an interference patt...

    Text Solution

    |

  13. A : Young.s double slit experiment can be performed using a source of ...

    Text Solution

    |

  14. A : For best contrast between maxima and minima in the interference pa...

    Text Solution

    |

  15. A : In Young.s double slit experiment, the fringes become indistinct i...

    Text Solution

    |

  16. A : When a light wave travels from a rarer to a denser medium, it loos...

    Text Solution

    |

  17. Assertion The pattern and position of fringes always remain same even ...

    Text Solution

    |

  18. A : Y.D.S.E, as the source slit width increases, fringe pattern gets l...

    Text Solution

    |

  19. A : For interference fringes to be seen, the condition (s)/(S) lt (lam...

    Text Solution

    |

  20. Statement-1: In Young's double slit experiment the two slits are at di...

    Text Solution

    |