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प्रश्न
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
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उत्तर
In furnished room, echo is very less. Hence, he can conclude that he was in a furnished room.
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संबंधित प्रश्न
Does sound follow the same laws of reflection as light does? Explain.
Explain why, the flash of lightning reaches us first and the sound of thunder is heard a little later.
Name three devices which work on the reflection of sound.
Why are the ceilings of concert halls made curved ? Draw a labelled diagram to illustrate your answer.
Name any two objects which are good reflectors of sound.
What is an echo ? How is echo formed ?
Which of the following device does not work on the multiple reflections of sound waves ?
How can you calculate the speed of sound using echo?
To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.
Answer the following question in your own words.
What factors are important to get a distinct echo?
