Home
Class 11
PHYSICS
Flash and thunder are produced simultane...

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why ?

Text Solution

Verified by Experts

This is because velocity of sound in air is only `332m//s, ` whereas velosity of light in air is `3xx10^(8)m//s`. Hence, the flash is seen much before the thunder of lightening is heard.
Promotional Banner

Topper's Solved these Questions

  • OSCILLATIONS AND WAVES

    PRADEEP|Exercise Very Short Answer Questions|99 Videos

  • OSCILLATIONS AND WAVES

    PRADEEP|Exercise Short Answer Questions|104 Videos

  • OSCILLATIONS AND WAVES

    PRADEEP|Exercise SOLVED EXAMPLES|54 Videos

  • MATHEMATICAL TOOLS

    PRADEEP|Exercise Fill in the blanks|5 Videos

  • PHYSICAL WORLD AND MEASUREMENT

    PRADEEP|Exercise Competiton Focus Jee Medical Entrance|18 Videos

Similar Questions

Explore conceptually related problems

Flash ans thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen, why ?

Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen. This is because

Why the thunder is heard after the flash of lightning ?

The thunder of a lightening in the sky is heard 10 seconds after the flash of light. If the speed of sound is 330 m/s, find the distance of lightening.

Take the speed of sound to be 340 m/s. A thunder clap is heard about 3 s after the lightning is seen. The source of both light and sound is

Two sounds of very close frequencies, say 256 Hz and 260 Hz are produced simultaneously. What is the frequency of resultant sound and also write the number of beats heard in one second?

PRADEEP-OSCILLATIONS AND WAVES-conceptual problems
  1. What is a harmonic wave function ?

    Text Solution

    |

  2. Can the wave functions y=r(x-vt) or y=rlog(x+vt), y=rsqrt(vt-x) repres...

    Text Solution

    |

  3. Flash and thunder are produced simultaneously. But thunder is heard a ...

    Text Solution

    |

  4. Can two astronauts talk on the surface of moon as they do on earth?Why...

    Text Solution

    |

  5. What are the essential points of difference between sound and light wa...

    Text Solution

    |

  6. When we start filling an empty bucket with water, the pitch of sound p...

    Text Solution

    |

  7. Why does a tuning fork have two prongs?

    Text Solution

    |

  8. Which factors determine the frequency of a tuning fork ?

    Text Solution

    |

  9. Of what material is the tuning fork made and why?

    Text Solution

    |

  10. Why is a sonometer box provided with holes?

    Text Solution

    |

  11. What are the conditions for resonance of air column with a tuning fork...

    Text Solution

    |

  12. Sound travels faster on a rainy day than on a dry day. Does it imply t...

    Text Solution

    |

  13. A balloon is filled with CO(2). How will it behave as a lens for sound...

    Text Solution

    |

  14. Why sound can be hear more distinctly at a greater distance over water...

    Text Solution

    |

  15. What are fundamental note and overtones?

    Text Solution

    |

  16. What are harmonics?

    Text Solution

    |

  17. A bugle has no valves. How can we sound different notes on it?

    Text Solution

    |

  18. Why all the stinged instruments are provided with hollow boxes?

    Text Solution

    |

  19. Where will a person hear maximum sound, at node or antinode?

    Text Solution

    |

  20. Examine the following equations and test whether interference, beats o...

    Text Solution

    |