Home
Class 12
PHYSICS
A point source emits sound equallt in al...

A point source emits sound equallt in all direction in a non -absoring medium. Two points P and Q are at distance of 2m and 3m repectively from the source. The ratio of the intensities of the waves at P and Q is

A

`9:4`

B

`2:3`

C

`3:2`

D

`4:9`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-D ( Assertion - Reason Type Questions ))|12 Videos
  • WAVES

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT ( SECTION-B ( Objective type Questions ))|45 Videos
  • WAVE OPTICS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-J (Aakash Challengers question))|1 Videos
  • WORK, ENERGY AND POWER

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D)|13 Videos

Similar Questions

Explore conceptually related problems

A point source emits sound equally in all directions in a non-absorbing medium. Two point P and Q are at distance of 2 m and 3 m respectively from the source. The ratio of the intensities of the wave at P and Q is :

A point source emits sound equally in all directions in a non-absorbing medium. Two points P and Q are at the distance of 9 meters and 25 meters respectively from the source. The ratio of amplitudes of the waves at P and Q is…..

A point source of sound is placed in a non-absorbing medium two points A and B are at the distance of 1 m and 2 m, respectively, from the source. The ratio of amplitudes of waves at A to B is

A point source of sound is placed in a non-absorbing medium two points A and B are at the distance of 1 m and 2 m, respectively, from the source. The ratio of amplitudes of waves at A to B is

At two point P and Q on screen in Young's double slit experiment, waves from slits S_(1) and S_(2) have a path difference of 0 and (lamda)/(4) respectively. The ratio of intensities at P and Q will be:

A source oscillates with a frequency 25 Hz and the wave propagates with 300m//s . Two points A and B are located at distances 10m and 16m away from the source. The phase difference between A and B is

If the distances of two points P and Q from the focus of a parabola y^2=4x are 4 and 9,respectively, then the distance of the point of intersection of tangents at P and Q from the focus is

A point source emitting uniformly in all directions is placed above a table top at a distance of 0.50 m from it. The luminous flux of the source is 1570 lumen. Find the illuminance at a small surface area of the table to a.directly below the source and b. at as distance of 0.80 m from the source.

The distance of two points P and Q on the parabola y^(2) = 4ax from the focus S are 3 and 12 respectively. The distance of the point of intersection of the tangents at P and Q from the focus S is

A point source is emitting sound in all directions. The ratio of distance of two points from the point source where the difference in loudness levels is 3 dB is: (log_(10)2=0.3) .

AAKASH INSTITUTE ENGLISH-WAVES-ASSIGNMENT ( SECTION-C ( Previous year Questions ))
  1. The of reverberation of a room A is 1s. What will be the time (in seco...

    Text Solution

    |

  2. Which one of the following statements is true ?

    Text Solution

    |

  3. A point source emits sound equallt in all direction in a non -absoring...

    Text Solution

    |

  4. Two vibrating tunign forks produce progessive waves given by y(1)=4 ...

    Text Solution

    |

  5. Two waves are represented by the equations y(1)=asin(omegat+kx+0.57)...

    Text Solution

    |

  6. A hospital uses an ultrasonic scanner to locate tumours in a tissue. W...

    Text Solution

    |

  7. Two sound waves having a phase difference of 60^(@) have path differe...

    Text Solution

    |

  8. A transverse wave is represented by the equation y=y0sin.(2pi)/(lamd...

    Text Solution

    |

  9. A wave travelling in positive X-direction with A = 0.2 m velocity = 36...

    Text Solution

    |

  10. The phase difference between two waves represented by y(1)=10 ^(...

    Text Solution

    |

  11. A wave of frequency 100 Hz is sent along a string towards a fixed end....

    Text Solution

    |

  12. A standing wave having 3 node and 2 antinode is formed between two ato...

    Text Solution

    |

  13. Two waves of wavelength 50 cm and 51 cm produce 12 beat/s . The speed ...

    Text Solution

    |

  14. Two sound sources emitting sound each of wavelength lambda are fixed a...

    Text Solution

    |

  15. Two vibrating tunign forks produce progessive waves given by y(1)=4 ...

    Text Solution

    |

  16. A vehical , with a horn of frequency n is moving with a velocity of ...

    Text Solution

    |

  17. A whistle revolves is a circle with angular velocity w= 20 rad/s using...

    Text Solution

    |

  18. An observer moves towards a stationary source of sound with a speed 1/...

    Text Solution

    |

  19. A car is moving towards a high cliff. The car driver sounds a horn of ...

    Text Solution

    |

  20. The equation of a simple harmonic wave is given by y = 3 sin"(pi)/(2)...

    Text Solution

    |