Home
Class 12
PHYSICS
A submarine (A) travelling at 18km//hr i...

A submarine (A) travelling at `18km//hr` is being chased along the line of its velocity by another submarine (B) travelling at `27km//hr` B sends a sonar signal of 500 Hz to detect A and receives a reflected sound of frequency v. the value of v is close to (speed of sound in water `=1500ms^(-1))`

A

502Hz

B

499Hz

C

504Hz

D

507Hz

Text Solution

Verified by Experts

The correct Answer is:
A
Case - I
( B ) Source ( A ) Observer
`v^(1) =v[(1500 - 5 )/(1500 - 7.5)]`
Case -II ( B ) Observer ( A ) Source
`v^(11) = v^(1)[(1500 + 7.5)/(1500 + 5)] ~~502 Hz`
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2|32 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise JEE ADVANCED ARCHIVE LEVEL 2 (MUTIPLE CORRECT TYPE)|20 Videos

  • WAVE MOTION

    VMC MODULES ENGLISH|Exercise LEVEL-2|41 Videos

  • UNITS, MEASUREMENTS & ERRORS

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - B|10 Videos

  • WORK ENERGY AND POWER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|54 Videos

Similar Questions

Explore conceptually related problems

A bat moving at 1 0 ms^(-1) towards a wall sends a sound signal of 8000 Hz towards it. On reflection it hears a sound of frequency f. The value of g in Hz is close to (speed to sound = 320 ms^(-1) ) :

Submarine A is going with speed of 18km//hr . Submarine B is chasing A with speed of 27 km//hr . It sends frequency of 500Hz and hears after reflection from A . The perceived frequency is : (V_("sound in water")=1500m//s)

Submarine A is going with speed of 18km//hr . Submarine B is chasing A with speed of 27 km//hr . It sends frequency of 500Hz and hears after reflection from A . The perceived frequency is : (V_("sound in water")=1500m//s)

A sonar system fixed in a submariene operatres at a frequency 40KHz. An enemey submarine moves towards the sonar with a speed of 360kmh^(-1) . What is the frequency of sound reflected by the submarine? Speed of sound in water 1450ms^(-1)?

A SONAR system fixed in a submarine operates at a frequency 40.0kHz. An enemy submarine moves towards the SONAR with a speed of 360 km h^(-1) . What is the frequency of sound reflected by the submarine ? Take the speed of sound in water to be 1450 ms^(-1) .

An observer travelling with a constant velocity of 16.5 ms^(-1) , passes closes to a stationary source of sound and notices that there is a change of frequency of 50 Hz as he passes the source. Calculate the frequency of the source. ("Speed of sound in air = 330 ms"^(-1)).

Two trains are travelling towards each other both at a speed of 90 km h^-1 . If one of the trains sounds a whistle at 500 Hz, what will be the apparent frequency heard in the other train ? Speed of sound in air = 350 m s^-1 .

The driver of a car travelling with speed 30ms^-1 towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330ms^-1 , the frequency of reflected sound as heard by driver is

In the figure shown, a source of sound of frequency 510 Hz moves with constant velocity v_S=20(m)/(s) in the direction shown. The wind is blowing at a constant velocity v_W=20(m)/(s) towards an observer who is at rest at point B. corresponding to the sound emitted by the source at initial position A, the frequency detected by the observer is equal to (speed of sound relative to air is 330(m)/(s) )

In the figure shown, a source of sound of frequency 510 Hz moves with constant velocity v_S=20(m)/(s) in the direction shown. The wind is blowing at a constant velocity v_W=20(m)/(s) towards an observer who is at rest at point B. corresponding to the sound emitted by the source at initial position A, the frequency detected by the observer is equal to (speed of sound relative to air is 330(m)/(s) )

VMC MODULES ENGLISH-WAVE MOTION-JEE MAIN ARCHIVE LEVEL 1
  1. A closed organ pipe has a fundamental frequency of 1.5 kHz. The number...

    Text Solution

    |

  2. A string of length 1 m and mass 5 g is fixed at both ends. The tension...

    Text Solution

    |

  3. A train moves towards a stationary observer with speed 34 m/s. The tra...

    Text Solution

    |

  4. Equation of travelling wave on a stertched string of linear density 5 ...

    Text Solution

    |

  5. A resonance tube is old and has jagged end. It is still used in the la...

    Text Solution

    |

  6. A tavelling harmonic wave is represented by the equation y(x,t)=10...

    Text Solution

    |

  7. A person standing on an open ground hears the sound of a jet aeroplan...

    Text Solution

    |

  8. A wire of length 2L, is made by joining two wires A and B of same leng...

    Text Solution

    |

  9. A string is clamped at both the ends and it is vibrating in its 4^(th)...

    Text Solution

    |

  10. The pressure wave, P = 0.01 sin[1000t-3x]Nm^(-2), corresponds to the s...

    Text Solution

    |

  11. The correct figure that shows , schematically , the wave pattern produ...

    Text Solution

    |

  12. A string of length 2m is fixed at two ends. It is in resonance with a ...

    Text Solution

    |

  13. Two cars A and B are moving away from each other in opposite direction...

    Text Solution

    |

  14. A source of sound S is moving with a velocity of 50m//s towards a stat...

    Text Solution

    |

  15. A stationary source of sound is emitting sound of frequency 500Hz. Two...

    Text Solution

    |

  16. Two sources of sound S(1) and S(2) produce sound waves of same frequen...

    Text Solution

    |

  17. A small speaker delivers 2 W of audio will one detect 120 dB intensit...

    Text Solution

    |

  18. A tuning fork of frequency 480 Hz is used in an experiment for measuri...

    Text Solution

    |

  19. A progressive wave travelling along the positive x-direction is repres...

    Text Solution

    |

  20. A submarine (A) travelling at 18km//hr is being chased along the line ...

    Text Solution

    |