Home
Class 11
PHYSICS
A source of sound and detector are arran...


A source of sound and detector are arranged as shown in Fig. The detector is moving along a circle with constant angular speed `omega`. It start from the shown location in anticlockwise direction at `t=0`
(Take velocity of sound in air as v)
What is the frequency as received by detector, when it rotates by an angle `(pi)/(2)`?

A

f

B

`(v-omegaR)/(v)xxf`

C

`(v-(omega)/( R))/(v)xxf`

D

`v-(omegaRxx(2)/(sqrt5))/(v)xxf`

Text Solution

Verified by Experts

The correct Answer is:
D

The location of detector at required instant is shown in Fig.
We have, `v_0=Romega`
`f_(ap)=(v-v_0costheta)/(v)xxf`
`costheta=(2R)/(sqrt(5)R)`
`f_(ap)=(v-omegaRxx(2)/(sqrt5))/(v)xxf`
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Integer|16 Videos

  • SOUND WAVES AND DOPPLER EFFECT

    CENGAGE PHYSICS ENGLISH|Exercise Assertion-Reasoning|24 Videos

  • RIGID BODY DYNAMICS 2

    CENGAGE PHYSICS ENGLISH|Exercise Interger|2 Videos

  • SUPERPOSITION AND STANDING WAVES

    CENGAGE PHYSICS ENGLISH|Exercise Comprehension Type|5 Videos

Similar Questions

Explore conceptually related problems

A source of sound and detector are arranged as shown in Fig. The detector is moving along a circle with constant angular speed omega . It start from the shown location in anticlockwise direction at t=0 (Take velocity of sound in air as v) Find the time interval between minimum and maximum frequency as received by the detector.

A source of sound and detector are arranged as shown in Fig. The detector is moving along a circle with constant angular speed omega . It start from the shown location in anticlockwise direction at t=0 (Take velocity of sound in air as v) Q. Find the time at which the detector will hear the maximum frequency for the first time.

A source of sound and detector are moving as shown in Fig. at t=0 . Take velocity of sound wave to be v . For this situation mark out the correct statement(s).

A source of sound and detector are moving as shown in Fig. at t=0 . Take velocity of sound wave to be v . For this situation mark out the correct statement(s).

A solid cylinder is given a velocity v_(0) and an angular speed omega_(0) in the anticlockwise direction and then it is placed gently on a very long rough plank ( initially at rest ) as shown in the figure. Then, choose the incorrect statement :

An electron is at P t = 0 It is circulating in anticlockwise direction with a constant angular speed omega along the shown circular path. Magnetic field at Q(CQ = 2R , where R is radius of the circular) will be recorded as zero at times)

A source of sound emitting a sound of frequency f_0 and detector are moving with same speed v_0 as shown in the figure at t = 0. Take velocity of sound wave to be v (>> v_0 ). For this situation mark out the correct statement(s)

A stationary sound sound 's' of frequency 334 Hz and a stationary ovserver 'O' are placed near a reflecting suface moving away from the source with velocity 2 m/s as shown in the figure. If the velocity of the sound waves is air is v= 330 m/s the apparent frequency of the echo is

A source of sound and a detector are placed at the same place on ground At t=0 , the source S is projected towards reflector with velocity v_0 in vertical upward directon and reflector starts moving down with constant velocity v_0 At t=0 , the vertical separation between the reflector and source is H((gtv_0^2)/(2g)) . The speed of sound in air is v(gtgtv_0) , Take f_0 as the frequency of sound waves emitted by source. Based on above information answer the following questions. Q. Frequency of sound received by detector after being reflected by reflector at t=(v_0)/(2g) is

A source of sound and a detector are placed at the same place on ground At t=0 , the source S is projected towards reflector with velocity v_0 in vertical upward directon and reflector starts moving down with constant velocity v_0 At t-0 , the vertical separation between the reflector and source is H((gtv_0^2)/(2g)) . The speed of sound in air is v(gtgtv_0) , Take f_0 as the frequency of sound waves emitted by source. Based on above information answer the following questions. Q. Wavelength of sound waves as received by detector before reflection at t=(v_0)/(2g) is

CENGAGE PHYSICS ENGLISH-SOUND WAVES AND DOPPLER EFFECT-Comprehension
  1. When a sound wave enters the ear, it sets the eardrum into oscillation...

    Text Solution

    |

  2. When a sound wave enters the ear, it sets the eardrum into oscillation...

    Text Solution

    |

  3. A source of sound and detector are arranged as shown in Fig. The detec...

    Text Solution

    |

  4. A source of sound and detector are arranged as shown in Fig. The detec...

    Text Solution

    |

  5. A source of sound and detector are arranged as shown in Fig. The detec...

    Text Solution

    |

  6. As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving...

    Text Solution

    |

  7. As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving...

    Text Solution

    |

  8. As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving...

    Text Solution

    |

  9. As shown if Fig. a vibrating tuning fork of frequency 512 Hz is moving...

    Text Solution

    |

  10. A source of sound with natural frequency f0=1800Hz moves uniformly alo...

    Text Solution

    |

  11. A source of sound with natural frequency f0=1800Hz moves uniformly alo...

    Text Solution

    |

  12. A source of sound and a detector are placed at the same place on groun...

    Text Solution

    |

  13. A source of sound and a detector are placed at the same place on groun...

    Text Solution

    |

  14. A source of sound and a detector are placed at the same place on groun...

    Text Solution

    |

  15. A railroad train is travelling at 30(m)/(s) in still air. The frequenc...

    Text Solution

    |

  16. A railroad train is travelling at 30 m/s in still air. The frequency o...

    Text Solution

    |

  17. A source of sonic oscillation with frequency n0=600Hz moves away and a...

    Text Solution

    |

  18. A source of sonic oscillation with frequency n0=600Hz moves away and a...

    Text Solution

    |

  19. A source of sonic oscillation with frequency n0=600Hz moves away and a...

    Text Solution

    |

  20. A source S of acoustic wave of the frequency v0=1700Hz and a receiver ...

    Text Solution

    |