Home
Class 12
PHYSICS
Two loudspeakers L1 and L2 driven by a c...


Two loudspeakers `L_1` and `L_2` driven by a common oscillator and amplifier, are arranged as shown. The frequency of the oscillator is gradually increased from zero and the detector at D records a series of maxima and minima. If the speed of sound is `330ms^-1` then the frequency at which the first maximum is observed is

A

165 Hz

B

330 Hz

C

495 Hz

D

660 Hz

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SOUND WAVES

    MOTION|Exercise Exercise - 2|41 Videos

  • SOUND WAVES

    MOTION|Exercise Exercise - 3 (Section - A)|27 Videos

  • SOUND WAVES

    MOTION|Exercise Questions for practice|12 Videos

  • SIMPLE HARONIC MOTION

    MOTION|Exercise EXERCISE -4 (Leve-II) [ JEE 2011]|11 Videos

  • SURFACE TENSION

    MOTION|Exercise Exercise - 3 | Section - B Previous Year Problems | AIEEE|12 Videos

Similar Questions

Explore conceptually related problems

An inductor L , a capacitor C and AC ammeters A_(1),A_(2) and A_(3) are connected in the circuit as shown. When the frequency of the oscillators is increased, then at resonant frequency, the reading of ammeter ?

A sound source capable of producing sound of variable frequencies is located at a distance of 1 m from a reflecting wall as shown in the figure. A detector D is lying at a point shown in the figure. The various distances are also indicated. If the speed of sound in air is 340" "ms^(-1) , find the frequencies of sound within the audible range, which will have maximum intensity at detector?

Two speakers S_1 and S_2 , driven by the same amplifier, areplaced at y = 1.0 m and y = -1.0 m . The speakers vibrate in phase at 600 Hz. A man stands at a point on the X-axis at a very large distance from the origin and starts moving parallel to the Y-axis. The speed of sound in air is 330 ms^-1 (a) At what angle theta will the intensity of sound drop to a minimum for the first time ? (b) At what angle will he hear a maximum of sound intensity for the first time ? (c) If he continues to walk along the line, how many more maxima can he hear ?

The frequency of the sound of a car horn as recorded by an observer towards whom the car is moving differs from the frequency of the horn by 10% . Assuming the velocity of sound in air to be 330ms^(-1) , the velocity of the car is

A sound sources, detector and a movable wall are arranged as shown in figure. In this arrangement detectir us detacting the maximum intensity. If the speed of sound is 330 m//s in air and frequency of source is 660 Hz , then find the minimum distance by which the wall should be moved away from source, so that detector dtects minimmum intensity.

Calculate the beat frequency heard when two sound sources of wavelength 35cm and 35.2 cm are sounded together. The speed of sound in air is 330 ms^(-1)

A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15ms^-1 . Then the frequency of sound that the observer hears in the echo reflected from the cliff is (Take velocity of sound in air =330ms^-1 )

A resistor R , an inductor L , a capacitor C and voltmeters V_(1),V_(2) and V_(3) are connected to an oscillator in the circuit as shown in the adjoining diagram.When the frequency of the oscillator is increased, upto resonance frequency, the voltmeter reading (at resonance frequency) is zero in the case of:

MOTION-SOUND WAVES-Exercise - 1
  1. A source of frequency n is moving with a uniform velocity v towards a ...

    Text Solution

    |

  2. If an observer is moving with uniform velocity v to wards a stationary...

    Text Solution

    |

  3. A source of sound crosses a stationary observer which is moving with u...

    Text Solution

    |

  4. If a source of frequency n moving with velocity v crosses a stationary...

    Text Solution

    |

  5. If a source of frequency n crosses a stationary observer with uniform ...

    Text Solution

    |

  6. If an observer moving with velocity v crosses a stationary source of f...

    Text Solution

    |

  7. A source of frequency n and an observer are moving on a straight line ...

    Text Solution

    |

  8. Doppler effect in light differs with Doppler effect for sound, because...

    Text Solution

    |

  9. The velocity of light emitted by a source S observed by an observer O ...

    Text Solution

    |

  10. The width of spectral lines (spreading of spectral line) can be explai...

    Text Solution

    |

  11. A star is receding from earth with a velocity 3 xx 10^(6) m//s . If t...

    Text Solution

    |

  12. Due to the relative motion between a star and the earth, the following...

    Text Solution

    |

  13. The apparent change in the frequency n of the electromagnetic signal, ...

    Text Solution

    |

  14. The intensity ratio of two waves is 1 : 16. The ratio of their amplitu...

    Text Solution

    |

  15. A tuning fork of frequency 250 Hz is vibrating at one end of a tube as...

    Text Solution

    |

  16. Two loudspeakers L1 and L2 driven by a common oscillator and amplifier...

    Text Solution

    |

  17. When a body of mass 25Kg is suspended from a sonometer wire then it vi...

    Text Solution

    |

  18. The total mass of a sonometer wire remains constant. On increasing the...

    Text Solution

    |

  19. The fundamental frequency of a sonometer wire carrying a block of mass...

    Text Solution

    |

  20. Vibrating tuning fork of frequency n is placed near the open end of a ...

    Text Solution

    |