Home
Class 12
PHYSICS
A man stands before a large wall at a di...

A man stands before a large wall at a distance of 50.0m and claps his hands at regular intervals. Initially, the interval is large. He gradually reduces the interval and fixes it at a value when the echo of a clap merges with the next clap. If he has to clap 10 times during every 3 seconds, find the velocity of sound in air.

Text Solution

Verified by Experts

333 m/s
Promotional Banner

Topper's Solved these Questions

  • WAVE MOTION AND SOUND

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - I)|60 Videos
  • WAVE MOTION

    AAKASH SERIES|Exercise PRACTICE SHEET ADVANCED (INTEGER TYPE QUESTIONS)|10 Videos
  • WAVE OPTICS

    AAKASH SERIES|Exercise PROBLEMS (LEVEL - II)|20 Videos

Similar Questions

Explore conceptually related problems

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5km h^-1 . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^-1 . What is the (a) magnitude of average velocity and (n) average speed of the man over the time interval 0 to 50 minutes?

A man walks on a straight road from his home to a market 2.5 km away with a speed of 5 km h^(-1) . Finding the market closed, he instantly turns and walks back home with a speed of 7.5 km h^(-1) . What is the (a) magnitude of average velocity, and (b) average speed of the man over the interval of time (i) 0 to 30 min, (ii) 0 to 50 min, (iii) 0 to 40 min ? [Note: You will appreciate from this exercise why it is better to define average speed as total path length divided by time, and not as magnitude of average velocity. You would not like to tell the tired man on his return home that his average speed was zero !]

AAKASH SERIES-WAVE MOTION AND SOUND-PROBLEMS (LEVEL - II)
  1. A railroad train is travelling at 30 m/s in still air. The frequency o...

    Text Solution

    |

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

    Text Solution

    |

  3. A 300 Hz source, an observer and wind are moving as shown in the figur...

    Text Solution

    |

  4. A person standing on a road sends a sound signal to the driver of a ca...

    Text Solution

    |

  5. A stationary sound sources of frequency 334 Hz and a stationary obser...

    Text Solution

    |

  6. Spherical waves are emitted from a 1.0 watt source in an isotropic non...

    Text Solution

    |

  7. The intensity of sound from a point source is 1.0 xx 10^(-8) W//m^2 at...

    Text Solution

    |

  8. Most people interpret a 9.0 dB increase in sound intensity level as a ...

    Text Solution

    |

  9. About how many times more intense will the normal ear perceive a sound...

    Text Solution

    |

  10. The explosion of a fire cracker in the air at a height of 40 m produce...

    Text Solution

    |

  11. The sound level at a point 5.0 m away from a point source is 40 dB. Wh...

    Text Solution

    |

  12. If the intensity of sound is doubled, by how many decibels does the so...

    Text Solution

    |

  13. Sound with intensity larger than 120 dB. appears painful to a person. ...

    Text Solution

    |

  14. Two waves, each having a frequency of 100 Hz and a wavelength of 2.0 c...

    Text Solution

    |

  15. Two waves, each having a frequency of 100 Hz and a wavelength of 2.0 c...

    Text Solution

    |

  16. Two waves, each having a frequency of 100 Hz and a wavelength of 2.0 c...

    Text Solution

    |

  17. Three component sinusoidal waves progressing in the same direction alo...

    Text Solution

    |

  18. A soldier walks towards a high wall taking 120 steps per minute. When ...

    Text Solution

    |

  19. A man stands before a large wall at a distance of 50.0m and claps his ...

    Text Solution

    |

  20. A road runs midway between two parallel rows of buildings. A motorist ...

    Text Solution

    |