Home
Class 10
PHYSICS
A man standing 25 m away from a wall pro...

A man standing 25 m away from a wall produces a sound and receives the reflected sound.
Will the man be able to hear a distinct echo ? Give a reason for your answer.

Text Solution

Verified by Experts

Echo will be heard because the conditions required for the formulation of echo are fulfilled i.e., the distance is more than 17 m and time period is more than 0.1 second.
Promotional Banner

Topper's Solved these Questions

  • SAMPLE PAPER 2011

    ICSE|Exercise SECTION-II|41 Videos

  • SAMPLE PAPER 2 (PHYSICAL EDUCATION)

    ICSE|Exercise MULTIPLE CHOICE QUESTIONS|50 Videos

  • SAMPLE PAPER 2012

    ICSE|Exercise SECTION-II|43 Videos

Similar Questions

Explore conceptually related problems

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Calculate the time after which he receives the reflected sound if the speed of sound in air is 350 m s^(-1) .

A man standing 25 m away from a wall produces a sound and receives the reflected sound. Calculate the time after which he receives the reflected sound if the speed of sound in air is 350ms^(-1) .

A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.

In which medium the speed of sound is more : humid air or dry air ? Give a reason to your answer.

A man standing in front of a wall produces a sound and hears an echo after 3 s. He walks .X. m away from the wall and produces the same sound. Now he hears an echo after 5.25 s. Calculate distance he walked away from the wall. (Speed of sound in air is 340 m/s)

An observer stands at a certain distance away from a cliff and produces a loud sound. He hears the echo of the sound after 1.8 s. Calculate the distance between the cliff and the observer if the velocity of sound in air is 340ms^(-1) .

A man standing 48 m away from a wall fires a gun. Calculate the time after which an echo is heard. (The speed of sound in air is 320 m s^(-1) ).

What minimum distance is required between the source of sound and the reflecting surface to hear an echo ? Give reason.

A microphone is connected to the Y-input of a C.R.O. Three different sounds are made in turn in front of the microphone. Their traces (a), (b) and (c) produced on the screen are shown in Fig. Which trace is due to the loudest sound ? Give reason for your answer.

A man standing at some distance from a cliff hears the echo of sound after 2s. He walks 495 m away from the cliff. He produces a sound there and receives the echo after 5s. What is the speed of sound?

ICSE-SAMPLE PAPER 2011-SECTION-II
  1. Give one use of sound ranging.

    Text Solution

    |

  2. A man standing 25 m away from a wall produces a sound and receives the...

    Text Solution

    |

  3. A man standing 25 m away from a wall produces a sound and receives the...

    Text Solution

    |

  4. Name two safety devices which are connected to the live wire of a hous...

    Text Solution

    |

  5. Give one important function of each of these two devices. i) Switch ii...

    Text Solution

    |

  6. Draw a graph of Potential difference (V) versus Current (I) for an ohm...

    Text Solution

    |

  7. How can you find the resistance of the resistor from this graph?

    Text Solution

    |

  8. What is a non-ohmic resistor ?

    Text Solution

    |

  9. An electric bulb is marked 100 W, 250 V. What information does this co...

    Text Solution

    |

  10. How much current will the bulb draw, if connected to a 250 V supply?

    Text Solution

    |

  11. Three resistors are connected to a 12 V battery as shown in the figure...

    Text Solution

    |

  12. Three resistors are connected to a 12 V battery as shown in the figure...

    Text Solution

    |

  13. Three resistors are connected to a 12 V battery as shown in the figure...

    Text Solution

    |

  14. Explain why the weather becomes very cold after a hail storm.

    Text Solution

    |

  15. What happens to the heat supplied to a substance when the heat supplie...

    Text Solution

    |

  16. When 1 g of ice at 0^(@)C melts to form 1 g of water at 0^(@)C then, i...

    Text Solution

    |

  17. Give one example where high specific heat capacity of water is used as...

    Text Solution

    |

  18. Give one example where high specific heat capacity of water is used fo...

    Text Solution

    |

  19. 250 g of water at 30^(@)C is present in a copper vessel of mass 50 g. ...

    Text Solution

    |

  20. State two properties which a substance should possess when used as a t...

    Text Solution

    |