मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता १०

Explain why, the ceilings of concert halls are curved.

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प्रश्न

Explain why, the ceilings of concert halls are curved.

टीपा लिहा
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उत्तर

The ceilings of concert halls are curved so that multiple reflections of sound waves can take place.
The parabolic surfaces are used to focus the sound at a particular point. Hence sound will be louder.

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पाठ 5: Acoustics - Evaluation [पृष्ठ ७१]

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सामाचीर कलवी Science [English] Class 10 SSLC TN Board
पाठ 5 Acoustics
Evaluation | Q VII. 4. | पृष्ठ ७१

संबंधित प्रश्‍न

A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.

1) Calculate the speed with which this sound travels

2) What difference would be felt by a listener between the above sound and another sound traveling at the same speed, but of wavelength 2.6 m?


Define frequency term in relation to a wave.


A wave passes from one medium to another medium. Mention one property of the wave out of speed, frequency or wavelength which changes.


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What is a megaphone ? Name the principle on which a megaphone works.


Define an echo.

What is the full form of SONAR?

What is the full form of RADAR?

Give a simple experiment to demonstrate the reflection of sound waves.

What is meant by echo? What are the conditions necessary for its formation?

Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.


Write the approximate value of the speed of sound in water.


What do you understand by the ‘Echolocation system of Dolphins’?


Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?


A radio signal, sent towards the surface of the moon, is received in 2.5 seconds. If the speed of the radio waves is 3 × 108 ms−1, find the distance of the moon from the earth.


What is mean by the reflection of sound?


Explain reflection at the boundary of a rarer medium.


Explain Reflection at curved surfaces.


The direction of the incident sound, the direction of reflected sound, and the normal are in different Planes.


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