Question

Hello Mates ✌

❤ A very good to you all ❤

✔ Is sound a dimensionless quantity i.e. it is a quantity without any dimensions ?

✔ And is it a physical quantity ?

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Answer 1

$\bold{Hello}$



Nice question :-) and i hope my answer would be error free .


SOUND , firstly sound is not a physical quantity . Sound is a physical term and there is a diffrence between physical term and physical quantity . Physical quantity can be measured in numbers such as Force , Current ...these are physical quantity and Physical term = Sound , Light.


Sound can't be measured ! BUT , Sound Intensity can be measured .

this same thing is with light , Light cannot be measured but light intensity can be measured.
we are talking about sound here.

Also there is no unit of sound as sound is not a physical quantity . Sound intensity has unit that is Sound intensity is measured is ( db = Decibels )


So , if we say , we are measuring sound that is wrong. We measure sound intensity .


Hence , Sound is dimensionless .

BUT Sound intensity is a Physical quantity therefore it can be measured and Hence Sound intensity has Dimensions according to it's formulae .




A explanation in more simple language => If someone asks you the formulae of Sound ! what will you answer ......? you can't answer. But if someone asks you formulae of sound intensity Then you can tell the formulae and also it's dimensions in ( MLT ) form according to it's formulae .







Hope It Helps You. ^_^

Answer 2

Explanation:

\bold{Hello}Hello

Nice question :-) and i hope my answer would be error free .

SOUND , firstly sound is not a physical quantity . Sound is a physical term and there is a diffrence between physical term and physical quantity . Physical quantity can be measured in numbers such as Force , Current ...these are physical quantity and Physical term = Sound , Light.

Sound can't be measured ! BUT , Sound Intensity can be measured .

this same thing is with light , Light cannot be measured but light intensity can be measured.

we are talking about sound here.

Also there is no unit of sound as sound is not a physical quantity . Sound intensity has unit that is Sound intensity is measured is ( db = Decibels )

So , if we say , we are measuring sound that is wrong. We measure sound intensity .

Hence , Sound is dimensionless .

BUT Sound intensity is a Physical quantity therefore it can be measured and Hence Sound intensity has Dimensions according to it's formulae .

A explanation in more simple language => If someone asks you the formulae of Sound ! what will you answer ......? you can't answer. But if someone asks you formulae of sound intensity Then you can tell the formulae and also it's dimensions in ( MLT ) form according to it's formulae .

hope it helps...