Home
Class 12
PHYSICS
2 loudspeakers are emitting sound waves ...

2 loudspeakers are emitting sound waves of wavelength lambda with an initial phase difference of `pi/2` at what minimum distance from O on line AB will one hear a maximum

A

`25lambda`

B

`(100lambda)/sqrt(15)`

C

`(25lambda)/3`

D

`50 lambda`

Text Solution

Verified by Experts

The correct Answer is:
C
`Deltaphi=2npi`
`Rightarrowpi/2+(2pi)/lambdad sin theta=2npi`
`(2pi)/lambdadsintheta=(2n-1/2)pi`
`sintheta=(2n-1/2)lambda/(2d)=1/2xxlambda/(2xx3lambda)=1/12`
`Rightarrowy/sqrt((100lambda))^(2)=1/12`
`144y^(2)=(100lambda)^(2)`
`yapprox(100lambda)/12 = (25lambda)/3`
Promotional Banner

Topper's Solved these Questions

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Comphrehension|134 Videos

  • MASTER PRACTICE PROBLEM

    BANSAL|Exercise Reasoning|75 Videos

  • FLUID MECHANICS

    BANSAL|Exercise PYQS AIEEE|10 Videos

  • SEMICONDUCTORS

    BANSAL|Exercise CBSE Question|32 Videos

Similar Questions

Explore conceptually related problems

Two wavefronts separated by a distance of lambda//2 have a phase difference of -

Two sound sources emitting sound each of wavelength lambda are fixed at a given distance apart. A listener moves with a velocity u along the line joining the two suorces. The number of beats heard by him per second is

What is the minimum distance between two points in a wave having a phase difference 2pi ?

Two point sources of sound are kept at a separation of 10 cm. They vibrate in phase to produce waves of wavelength 5.0 cm. What would be the phase difference between the two waves arriving at a point 20 cm from one source (a) on the line joining the sources and (b) on the perpendicular bisector of the line joining the sources ?

Two coherent sound sources A and B produce a sound of wavelength lambda. If at t=0 a detector starts moving with constant velocity v_(0) from point O along y - direction, then the minimum time, after which it detects the sound of maximum intensity, is (D gt gt lambda)

There is a destructive interference between the two waves of wavelength lambda coming from two different paths at a point. To get maximum sound or constructive interference at that point, the path of one wave is to be increased by

A sound source emits two sinusoidal sound waves, both of wavelength lambda , along paths A and B as shown in figure.The sound travelling along path B is reflected from five surfaces as shown and then merges at point Q, producing minimum intensity at that point.The minimum value of d in terms of lambda is :

Two coherent narrow slits emitting sound of wavelength lambda in the same phase are placed parallet to each other at a small separation of 2 lambda . The sound is delected by maving a delector on the screen at a distance D(gt gt lambda) from the slit S_(1) as shows in figure. Find the distance y such that the intensity at P is equal to intensity at O .

BANSAL-MASTER PRACTICE PROBLEM-Additional topic
  1. 2 loudspeakers are emitting sound waves of wavelength lambda with an i...

    Text Solution

    |

  2. The manifestation of band structure in solids is due to

    Text Solution

    |

  3. When p-n junction diode is forward biased then

    Text Solution

    |

  4. If the ratio of the concentration of electron to that of holes in a se...

    Text Solution

    |

  5. If the lattice constant of this semiconductor is decreased, then which...

    Text Solution

    |

  6. In the following, which one of the diodes is reverse biased ?

    Text Solution

    |

  7. The circuit has two oppositively connected ideal diodes in parallel wh...

    Text Solution

    |

  8. If a p-n junction diode, a square input signal of 10 V is applied as s...

    Text Solution

    |

  9. In the circuit below, A and B represents two inputs and C represents t...

    Text Solution

    |

  10. A p-n junction (D) shown in the figure can act as a rectifier. An alte...

    Text Solution

    |

  11. The logic circuit shown below has the input waveforms ‘A’ and ‘B’ as s...

    Text Solution

    |

  12. The combination of gates shown below yields .

    Text Solution

    |

  13. Truth table for system of four NAND gates as shown in figure is : .

    Text Solution

    |

  14. In semiconductor the concentrations of electron and holes are 8xx10^(1...

    Text Solution

    |

  15. A potential difference of 2V is applied between the opposite faces of ...

    Text Solution

    |

  16. The main cause of avalence breakdown is

    Text Solution

    |

  17. A cube of germanium is placed between the poles of a magnet and a volt...

    Text Solution

    |

  18. In the given figure, which of the diodes are forward biased?

    Text Solution

    |

  19. Current in the circuit will be

    Text Solution

    |

  20. The diode used in the circuit shown in the figure has a constant volta...

    Text Solution

    |

  21. In the following circuits PN-junction diodes D(1), D(2) and D(3) are i...

    Text Solution

    |