Advertisements
Advertisements
प्रश्न
Why is the ceiling and wall behind the stage of good conference halls or concert halls made curved?
Advertisements
उत्तर
Ceiling and wall behind the stage of good conference halls or concert halls are made curved so that sound after reflection from the wall and ceiling reaches all the parts of the hall.
APPEARS IN
संबंधित प्रश्न
How are the wavelength and frequency of a sound wave related to its speed?
What are wavelength, frequency, time period and amplitude of a sound wave?
State the factors on which the pitch of a sound depends.
List four substances which are good absorbers of sound.
What change do you expect in the characteristic of a musical sound if its frequency is increased?
Define the term wave velocity. Write its S.I. unit.
Answer the following question :
Can sound travel in vacuum?
Match the pairs.
| Group ‘A’ | Group ‘B’ |
| (a) Flute | (1) Frequency less than 20 Hz |
| (b) Frequency | (2) Frequency more than 20000 Hz |
| (c) Sound level | (3) Vibrations in the air |
| (d) Ultrasonic sound | (4) Measured in Hz |
| (e) Infrasonic sound | (5) Decibel |
