Home
Class 12
PHYSICS
If A is the amplitude of the wave coming...

If A is the amplitude of the wave coming from a line source at a distance r, then :

A

`A prop r^(-2)`

B

`A prop r^(-1)`

C

`A prop r^(2)`

D

`A prop r^(1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Numerical MCQs Single Options Correct|49 Videos

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQs with One or More Options Correct|27 Videos

  • WAVE OPTICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|20 Videos

  • THERMODYNAMICS LAWS & SPECIFIC HEATS OF GASES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practice Exercise 3.4|11 Videos

  • WAVES

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSE, INPhO & IPhO|135 Videos

Similar Questions

Explore conceptually related problems

IF A is the amplitude of the wave coming from a point source at distance r then

Amplitude of a wave .

If the amplitude of a wave at a distance r from a point source is A , the amplitude at a distance 2 r will be

Calculate the ratio of slit width if the amplitudes of light waves coming from have a ratio of sqrt(3) : 1 .

If the amplitude of waves at a distance r from line source is A . The amplitude at a distance 4r will be

As a spherical wavefront propagates, the amplitude (a) of a spherical wavefront varies with the distance r of the source

Ratio of amplitudes of the waves coming from two slits having widths in the ratio 4 : 1 will be

PHYSICS GALAXY - ASHISH ARORA-WAVE OPTICS-Conceptual MCQ Single Option Correct
  1. Two light waves arrives at a certain point on a screen. The waves have...

    Text Solution

    |

  2. Two beam of light having intensities I and 4I interfere to produce a f...

    Text Solution

    |

  3. A plane electromagnetic wave of frequency w(0) falls normally on the s...

    Text Solution

    |

  4. White light is used to illuminate the two slits in a Young's double sl...

    Text Solution

    |

  5. Ratio of intensities between a point A and that of central fringe is 0...

    Text Solution

    |

  6. Two waves of same intensity produce interference. If intensity at maxi...

    Text Solution

    |

  7. Intensity of central bright fringe due to interference of two identica...

    Text Solution

    |

  8. In a Young’s double slit experiment, the separation of the two slits i...

    Text Solution

    |

  9. In a Young's double slit experiment, 12 fringes are observed to be for...

    Text Solution

    |

  10. In Young's double slit experiment the interference pattern is found to...

    Text Solution

    |

  11. If A is the amplitude of the wave coming from a line source at a dista...

    Text Solution

    |

  12. If A is the amplitude of the wave coming from a line source at a dista...

    Text Solution

    |

  13. Phase difference between two waves having same frequency (v) and same ...

    Text Solution

    |

  14. Widths of two slits in Young's experiment are in the ratio 4 : 1. What...

    Text Solution

    |

  15. Two slits S(1) and S(2) illuminated by a white light source give a whi...

    Text Solution

    |

  16. When a transparent parallel plate of uniform thickness t and refractiv...

    Text Solution

    |

  17. In the adjacent diagram, CP represents a wavefront and AO & BP, the co...

    Text Solution

    |

  18. In a Young's double slit experiment, D equals the distance of screen a...

    Text Solution

    |

  19. In figure, if a parallel beam of white light is incident on the plane ...

    Text Solution

    |

  20. In YDSE shown in figure a parallel beam of light is incident on the sl...

    Text Solution

    |