What is ultrasonic interferometer?
                   

3 years ago

Share

Answers : (5)

                                        

Dear Pavankumar .D,


Ultrasonic Interferometer is a device used to calculate the velocity of ultrasonic sound through different liquid media.


This has some very good applications which you can learn later i think !


 


All the Best & Good Luck !!


Hope thishelped you immensely..


Please approve my answer if you liked it by clicking on "Yes" given below...!!Smile


 

3 years ago
                                        

Ultrasonic interferometer is a simple device which yields accurate and consistent data, from which one can determine the velocity of ultrasonic sound in a liquid medium.


The schematic diagram of an ultrasonic interferometer is shown below.


                                                          


In an ultrasonic interferometer, the ultrasonic waves are produced by piezoelectric method. In a fixed frequency variable path interferometer, the wavelength of the sound used is measured, and from this one can calculate its velocity through that medium. The apparatus consists of an ultrasonic cell, which is a double walled brass cell with chromium plated surfaces and has a capacity of 10ml. The schematic diagram of an ultrasonic interferometer is shown below. The micrometer screw has a least count of 0.001cm and pitch scale has a length of 25mm. Ultrasonic waves of known frequency are produced by a quartz crystal which is fixed at the bottom of the cell. There is a movable metallic plate parallel to the quartz plate, which reflects the waves. These waves superimpose and if the separation between the plates is exactly a whole number multiple of wavelength of sound, standing waves are produced in the liquid medium. At this point, acoustic resonance occurs and this give rise to an electrical reaction on the generator driving quartz plate. Now the anode current of the generator becomes maximum.


If we increase or decrease the distance and the variation is exactly one half of the wavelength (λ/2) or its multiple, the anode current again becomes maximum. If ‘d’is the   separation between successive adjacent maximum anode current, then,


d = λ/2.


v:unknown * { BEHAVIOR: url(#default#VML) } o:unknown * { BEHAVIOR: url(#default#VML) } w:unknown * { BEHAVIOR: url(#default#VML) } .shape { BEHAVIOR: url(#default#VML) }


We have, the velocity (v) of a wave is related to its wavelength (λ) by the relation,


                                   v=fλ, where f is the frequency of the wave.


                                   Then,   v= λf= 2df.


The velocity of ultrasound is determined principally by the compressibility of the material of the medium. For a medium with high compressibility, the velocity will be less. Adiabatic compressibility of a fluid is a measure of the relative volume change of the fluid as a response to a pressure change. Compressibility is the reciprocal of bulk modulus, and is usually denoted by the Greek word beta (β).The adiabatic compressibility of the material of the sample can be calculated using the equation,


                                                                          


  where ρ is the density of the material of the medium and v is the velocity of the sound wave through that medium.

3 years ago
                                        

I want to know more applications of Ultrasonic Interferometer and basic concept behind that so please tell me ?

2 years ago
                                        why we use only such type of liquids like benzene and carbon tetrachloride in ultrasonic interferometer experiment to find velocity
                                        
9 months ago
                                        hai
                                        
9 months ago

Post Your Answer

More Questions On General Physics

Ask Experts

Have any Question? Ask Experts
Post Question
 
Answer ‘n’ Earn
Attractive Gift
Vouchers
To Win!!!
Click Here for details
sir, i have always have difficulty in understanding any topic that comes under physics. what should I do in order to overcome my problems?
 
 
The Key to learning physics lies at its heart that is the basics,get your basics strong other complex problems will automatically untangle.If need be start from the first chapter and then...
 
Karan Yadav 3 months ago
A boy sitting on his horse whips it. The horse speeds up at an average acceleration of 2.0 m/s 2 . If the boy does not slide back, what is the force of friction exerted by the horse on the...
 
 
Dear student, The Forces acting on the horse are (i) the weight Mg (ii) the normal contact force and (iii) the static friction f. (a) As the boy does not slide back, its acceleration a is...
  img
Sumit Majumdar 5 months ago
the resultant of A vector and B vector makes an angle alpha with A vector and beta with B vector ,then prove alpha is greater than beta if A
 
 
Always the resultant bends towards that vector which is higher in magnitude. If the magnitude of the vectors are the same, the resultant will make equal angles with both. But, If suppose A...
  img
Apoorva Arora 5 months ago
A gas is contained in a vertical, frictionless piston cylinder device. The piston has a mass of 20 kg with a cross-sectional area of 20 cm 2 and is pulled with a force of 100N. If the...
 
 
The total downward force =20g + 100000* A The upward force = 100 + pA, where p is the pressure inside. 100 + p A = 200 +100000A, p= (100 +10 * 20)/ (20 * 10 ^-4) p = 150000 Pa.
  img
Ashish Kumar 11 months ago
I have attended all lectures of current electricity in my iit coaching institute, but i am unable to solve assignments & dpp’s of this perticular chapter only. Whereas I have learnt all...
 
 
you have attended all lectures ofcurrent electricityin coacyour hing institute, but you are unable to solve assignments & dpp’s , because your concepts are weak you have to read...
  img
Sher Mohammad 5 months ago
Question Attached
 
 
Going through C’ would require one to drag the object through AB directly whereas going from C would require one to drag it along AC+BC. From the properties of a traingle, one can...
  img
Ravi 2 months ago
View all Questions »