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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.
What is meant by an echo?
Name the device which is used to address a small gathering of people.
Fill in the blank with suitable word :
Echoes are caused by the ...................... of sound.
State the laws of reflection of sound.
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Answer the following question in your own words.
What is an echo?
What are the medical applications of echo?
How can you calculate the speed of sound using echo?
______ is an image obtained by the use of reflected ultrasonic waves.
