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प्रश्न
Does sound follow the same laws of reflection as light does? Explain.
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उत्तर
Yes, sound also follows the same laws of reflection as light waves. The laws of reflection of sound are as follows:
- The incident sound wave, the reflected sound wave and the normal drawn at the point of incidence. All three are in the same plane.
- The normal drawn at the point of incidence of the reflecting surface and the angle between the direction of incidence and the direction of reflection of the sound are equal.
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संबंधित प्रश्न
What is meant by an echo?
The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.
Name three devices which work on the reflection of sound.
Name the device which is used to address a small gathering of people.
On which day, a hot day or a cold day, an echo is heard sooner ? Give reason for your answer.
Name any two objects which are good reflectors of sound.
A man standing 825 metres away from a cliff (steep rock) fires a gun. After how long will he hear its echo ? Speed of sound in air is 330 m/s.
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a bare room
Which of the following device does not work on the multiple reflections of sound waves ?
Rohan conducted experiments on echo in different media. He observed that a minimum distance of 'x' meters is required for the echo to be heard in oxygen and 'y' meters in benzene. Compare 'x' and 'y'. Justify your answer.
Speed of sound in oxygen: 340 ms-1
Speed of sound in benzene: 200 ms-1
