Home
Class 11
PHYSICS
What is your observation when two source...

What is your observation when two sources are emitting sound with frequency 499 Hz and 501 Hz ?

A

(A) Frequency of 500 Hz is heard with change in intensity take place twice.

B

(B) Frequency of 500 Hz is heard with change in intensity take place once.

C

(C) Frequency of 2 Hz is heard with change in intensity take place once.

D

(D) Frequency of 2 Hz is heard with change in intensity take place twice.

Text Solution

Verified by Experts

The correct Answer is:
A
Frequency of resultant, wave
`(f _(1) + f _(2))/(2) =(499 +501)/(2) =500 Hz`
(Here intensity of resultant wave changes `f _(2) -f_(1)` times in `1s = (501 - 499 )=2 Hz)`
Promotional Banner

Topper's Solved these Questions

  • WAVES

    KUMAR PRAKASHAN|Exercise SECTION-F (Questions From Module) (Sample questions for preparation of competitive exams)|23 Videos

  • WAVES

    KUMAR PRAKASHAN|Exercise SECTION-D (NCERT Exemplar Solution) (Long Answer Type Questions)|5 Videos

  • UNITS AND MEASUREMENT

    KUMAR PRAKASHAN|Exercise Section -F (Questions from Module )|20 Videos

  • WORK, ENERGY AND POWER

    KUMAR PRAKASHAN|Exercise QUESTION PAPER (SECTION - D)|1 Videos

Similar Questions

Explore conceptually related problems

Rhinoceroses can produce the sound of frequency as low as 5 Hz.

A source of sound is moving along a circular orbit of radius 3 meter with an angular velocity of 10 rad//s . A sound detector located far away from the source is executing linear simple harmonic motion along the line BD with an amplitude BC = CD = 6 meters . The frequency of oscillation of the detector is (5)/(pi) per second. The source is at the point A when the detector is at the point B . If the source emits a continuous sound wave of frequency 340 Hz , Find the maximum and the minimum frequencies recorded by the detector.

An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer ? (Speed of light =3xx10^(8)ms^(-1))

Two consecutive harmonics in stationary waves produced in a string of length 100 cm have frequencies 300 Hz and 400 Hz. It has maximum amplitude 10 cm. Obtain equation of stationary waves in this string when it oscillates with fundamental frequency.

The sounds of frequency less than 20 Hz are known as

Drw graphs of beat produced by two harmonic waves of frequency 11 Hz and 9 Hz.

A detector is released from rest over height h a source of sound of frequency f_(0) = 10^(3) Hz . The frequency observed by the detector at time t is plotted in the graph. The speed of sound in air is (g = 10 m//s^(2))

An audio signal consists of two distinct sound. One a human speech signal in the frequency band of 200Hz to 2700Hz , while the other is a high frequency music signal in the frequency band of 10200Hz to 15200Hz . The ratio of the AM signal together to the AM signal band width required to send just the human speech is:

The sound limit between the frequency of 20Hz – 20000Hz is called as

KUMAR PRAKASHAN-WAVES-SECTION-E (Multiple Choice Questions (MCQs)) (MCQs asked in Gujarat Board and Competitive Exams)
  1. Two closed organ pipes of length 100 cm and 101 cm produce 16 beats in...

    Text Solution

    |

  2. The second overtone of an open pipe has the same frequency as the firs...

    Text Solution

    |

  3. What is your observation when two sources are emitting sound with freq...

    Text Solution

    |

  4. If man were standing unsymmetrically between parallel cliffs, claps hi...

    Text Solution

    |

  5. A uniform string is vibrating with a fundamental frequency 'f. The new...

    Text Solution

    |

  6. Five sinusoidal waves have the same frequency 500 Hz but their amplitu...

    Text Solution

    |

  7. Mention the range of audible range for the humans.

    Text Solution

    |

  8. Among following media, sound has its maximum velocity in ......

    Text Solution

    |

  9. What should be minimum distance between listener and reflecting surfac...

    Text Solution

    |

  10. Equation of a wave propagating on a string is y =3 cos {pi (100 t - x)...

    Text Solution

    |

  11. Path different between waves y(1) = A(1) sin (omega t - (2pix)/(lamd...

    Text Solution

    |

  12. Reason for increase in the intensity of sound during night time is ......

    Text Solution

    |

  13. If resultant wave of two waves, each of amplitude A is also A then, ph...

    Text Solution

    |

  14. Magnitude of wave vector of an e.m.wave with frequency 150 MHz is .......

    Text Solution

    |

  15. For stationary waves produced in a string of length I wavelength in th...

    Text Solution

    |

  16. When two waves y (1) =A sin (omega t + (pi)/(6)) and y (2) = A cos (om...

    Text Solution

    |

  17. One source of sound moves towards stationary listener with a speed, (1...

    Text Solution

    |

  18. Wave equation for one progressive harmonic wave isy = 10 ^(-4) sin (60...

    Text Solution

    |

  19. For a string, tied with two fixed rigid supports, scparated by 75 cm h...

    Text Solution

    |

  20. Velocity of sound in O(2) gas is 460 ms^(-1) at certain temperature. ...

    Text Solution

    |