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प्रश्न
What are the medical applications of echo?
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उत्तर
- The principle of echo is used in obstetric ultrasonography, which is used to create real-time visual images of the developing embryo or fetus in the mother’s uterus.
- This is a safe testing tool, as it does not use any harmful radiation.
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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.
Which property of sound leads of the formation of echoes ?
On which day, a hot day or a cold day, an echo is heard sooner ? Give reason for your answer.
What is an echo ? How is echo formed ?
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
Explain by giving a scientific reason.
We cannot hear the echo produced in a classroom.
Answer the following question in your own words.
Study the construction of the Golghumat at Vijapur and discuss the reasons for the multiple echoes produced there.
A man is standing between two vertical walls 680 m apart. He claps his hands and hears two distinct echoes after 0.9 seconds and 1.1 seconds respectively. What is the speed of sound in the air?
To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.
