Question

charactericts of sound​

Answer 1

ǫᴜᴇsᴛɪᴏɴ

$\fbox{AñSwEr}$

Sound is produced by a longitudinal wave which consists of compressions and rarefactions travelling through a medium.

• Sound wave can be described by five characteristics:
• Wavelength,
• Amplitude,
• Time-Period,
• Frequency
• and Velocity or Speed.

The minimum distance in which a sound wave repeats itself is called its wavelength.

$\huge{\boxed{\mathcal\pink{\fbox{</p><p>}}}}$

$\huge\mathbb{\red MARK \pink{AS}\purple{BRAI}\blue{NLI}\orange{EST}}$

hit the thanks....

give 5 stars....

_ ) ╥Eᗩ皿 ️️PR ｪ皿Ē(

Answer 2

➠ Answer :-

➤ What is sound ?

• Sound is a form of energy produced by a vibrating bodies. Sound requires a material medium for its propagation.
• Sound does not propagate in vacuum as there is no material in the vacuum

➤ Characteristic of sound :-

➝ Loudness :-

• The loudness of sound depends on its amplitude. The loudness of sound is proportional to the square of the amplitude. A roar of a lion is louder than a woman’s voice.
• The loudness of sound is measured in Decibel (db). If loudness exceeds 80 db, then the sound becomes physically painful.

➝ Pitch :-

• The pitch of sound depends on its frequency. If frequency is more, then the pitch or shrillness is more.
• The pitch of a woman’s voice is more and it is shriller then a man’s voice.

➝ Audible sound :-

• Not all sound produced by vibrating bodies is audible. The human ear can recognise the sounds of frequencies in the range of 20 Hz to 20,000 Hz.
• This range of frequency of sound is called audible sound.
• Some animals like dogs and snakes can hear sounds of frequencies greater than 20,000 Hz.

➝ Infrasonic sounds :-

• Sounds of frequencies less than 20 Hz are called infrasonic sounds.

➝ Ultrasonic sounds :-

• The sounds of frequencies greater than 20,000 Hz are called ultrasonic sounds.

__________________

➤ Nature of sound.....

• Sound is a longitudinal, mechanical wave. Sound can travel through any medium, but it cannot travel through a vacuum. There is no sound in outer space.
• Sound is a variation in pressure. A region of increased pressure on a sound wave is called a compression (or condensation).