Advertisements
Advertisements
प्रश्न
Why are the ceilings of concert halls curved?
Advertisements
उत्तर
Generally, the ceilings of concert halls, are curved so that sound after reflection reaches all corners of the hall. Sometimes a curved sound board may be placed behind the stage so that the sound, after reflecting from the soundboard, spreads evenly across the width of the hall.
APPEARS IN
संबंधित प्रश्न
How is the frequency of a stretched string related it’s tension?
Displacement distance graph of two sound waves A and B, travelling in a medium, are as shown in the diagram below.
Study the two sound waves and compare their:
1) Amplitudes
2) Wavelengths
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 does not change.
What do you mean by reflection of sound? State one condition for the reflection of a sound wave. Name a device in which reflection of sound wave is used.
How are bats able to fly in the dark?
A cork piece is floating on the surface of the water in a pond. A piece of pebble is dropped into the water. What will be your observation?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
Draw a diagram representing a wave of amplitude 4 cm and wavelength 2 m. If the frequency of the wave is 150 Hz, calculate its velocity.
Explain reflection at the boundary of a rarer medium.
