English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 10

Explain why, the ceilings of concert halls are curved.

Advertisements
Advertisements

Question

Explain why, the ceilings of concert halls are curved.

Short/Brief Note
Advertisements

Solution

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.

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Acoustics - Evaluation [Page 71]

APPEARS IN

Samacheer Kalvi Science [English] Class 10 SSLC TN Board
Chapter 5 Acoustics
Evaluation | Q VII. 4. | Page 71

RELATED QUESTIONS

How is the frequency of a stretched string related it’s tension?


What is the condition necessary for an echo to be heard distinctly?


State the use of echo by a bat, dolphin and fisherman.


How do bats avoid obstacles in their way, when in flight?


The following diagram shows three ways in which the string of an instrument can vibrate.

(a) which of the diagram shows the principal note?
(b) which has the frequency four times that of the first?
(c) what is the ratio of the frequency of the vibration in (i) and (ii)?


Name two sound absorbing materials (or objects) which can make our big room less echoey.


Draw a labelled diagram to show the multiple reflections of sound in a part of the stethoscope tube.


Distinguish between mechanical and electromagnetic waves.

Can a transverse wave travel in air?

Define an echo.

What is the difference between echo and reverberation?

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

Explain how is the principle of echo used by
(a) The bat during its flight at night,
(b) The dolphin to locate small fish as its prey.


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


Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.


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


Waves produced on the surface of the water are formed to move with a velocity of 24 ms−1. If the wavelength of these waves equals 20 cm. find the
(i) frequency (no. of waves produced per second)
(ii) the time period (i.e. the time required to produce one wave) for these waves.


What is mean by the reflection of sound?


Write short notes on reflection of sound waves from plane and curved surfaces.


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


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×