Home
Class 12
PHYSICS
Two waves of intensities 1 and 41 superp...

Two waves of intensities 1 and 41 superpose, then the maximum and minimum intensities are ...... and ...... respectively.

A

5I,3I

B

9I, I

C

9I, 3I

D

5I, I

Text Solution

Verified by Experts

The correct Answer is:
B
`I_(max)=I_(1)+I_(2)+2 sqrt(I_(1)I_(2)) cos0^(@)`
`=I+4I+2 sqrt((I)(4I))xx1`
`=5I=2xx2I`
`=9I`
`I_(min)=I_(1)+I_(2)+2 sqrt(I_(1)I_(2)) cos pi`
`=I+4I+2 sqrt((I)(4I)) (-I)`
`=5I-4I=1`
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

The maximum and minimum values of expression (4-2costheta) respectively are

When two waves of amplitudes 3 unit and 5 unit superpose at some point, find ratio of maximum to minimum intensity.

Ratio of intensities of two waves is 9:1. If these two are superimposed, what is the ratio of maximum and minimum intensities?

Two coherent sources of intensities I_1 and I_2 produce an interference pattern. The maximum intensity in the interference pattern will be

Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25 . The intensities of the sources are in the ratio

Intensity of two sources are different and waves emitting from source experience interference. If ratio of maximum and minimum intensity in interference is 25, intensity of sources is .......

Ratio of intensities of two waves is given by 9: 1. Then ratio of their amplitudes is .....

Path difference between two waves superposing at one point is 132, so interference at that point will be ...... and ...... order.

Sounds from two identical sources S_(1) and S_(2) reach a point P . When the sounds reach directly, and in the same phase, the intensity at P is I_(0) . The power of S_(1) is now reduced by 64% and the phase difference between S_(1) and S_(2) is varied continuously. The maximum and minimum intensities recorded at P are now I_("max") and I_("min")

KUMAR PRAKASHAN-WAVE OPTICS-SECTION-D (MULTIPLCE CHOICE QUESTIONS (MCQS)) (MCQS FROM DARPAN BASED ON TEXTBOOK)
  1. An astronomical refracting telescope will have large angular magnifica...

    Text Solution

    |

  2. In a double slit experiment, when light of wavelength 400 nm was used,...

    Text Solution

    |

  3. Two waves of intensities 1 and 41 superpose, then the maximum and mini...

    Text Solution

    |

  4. Light appears to travel in a straight line because....

    Text Solution

    |

  5. Interference phenomenon appears in ......

    Text Solution

    |

  6. When a transparent medium of refractive index 1.5 and thickness of 2.5...

    Text Solution

    |

  7. Ratio of intensities of two waves is 9:1. If these two are superimpose...

    Text Solution

    |

  8. The path difference for destructive interference is.....

    Text Solution

    |

  9. The golden colour found in sea oyster is due to....

    Text Solution

    |

  10. When a beam of light is used determine the position of an object, the ...

    Text Solution

    |

  11. A double slit experiment is performed with light of wavelength 500 nm....

    Text Solution

    |

  12. In case of linearly polarised light, the magnitude of the electric fie...

    Text Solution

    |

  13. A stone thrown into still water creates a circular wave pattern moving...

    Text Solution

    |

  14. When exposed to sunlight, thin films of oil on water often exhibit bri...

    Text Solution

    |

  15. Which properties are independent of each other for waves propagating i...

    Text Solution

    |

  16. In Young's double slit experiment, the distance between two slits is m...

    Text Solution

    |

  17. Light is incident normally on a diffracting grating through which the ...

    Text Solution

    |

  18. Which out of following cannot produce two coherent sources ?

    Text Solution

    |

  19. In Young's double slit experiment, the two slits act as coherent sourc...

    Text Solution

    |

  20. In an interference the intensity of two interfering waves are I and 4I...

    Text Solution

    |