Advertisements
Advertisements
प्रश्न
What is loudness of sound? What factors does it depend on?
Advertisements
उत्तर
Loudness is the physiological response of the ear to the intensity of sound. The loudness of a sound depends on the amplitude of the vibration producing that sound. The greater the amplitude of the vibration, the louder the sound. The force that causes an object to vibrate determines the loudness of the sound. The loudness of a sound also depends on the amount of air that is vibrated.
संबंधित प्रश्न
Fill in the blank.
________ produces a sensation in ears.
Select the correct alternative :
We can distinguish a shrill sound from a flat sound by its
Draw displacement-time graph of a wave and show on it the amplitude and time period of wave.
The speed of light in air is :
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 |
How do the following factor affect the speed of sound in air?
Pressure in air.
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
When a sound wave travels through air, the air particles ______.
