Total Price: R

There are no items in this cart.
Continue Shopping
                   What is ultrasonic interferometer?

3 years ago


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
one year ago
one year ago

Post Your Answer

More Questions On General Physics

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details
a ball is projected with a speed u at an angle theta to the horizontal. the range R of the projectile is given by R=u^2 sin2theta/g for which value of theta the range will be maximumfor a...
Dear Vindhya, u 2 sin2 θ /g=Range-----eq.1 since maximum value of sin θ=1 and it is possible only when θ=90 here in eq.1, for sin2 θ to be maximum, 2 θ=90; which implies θ=45 in this case....
erra akhil 8 days ago
thanks but options are given as- pi/2 radian pi/3 radian pi/4 radian pi/6 radian
vindhya 8 days ago
For 45degrees the range is maximum
erra akhil 8 days ago
why the gravitational force is acting downwards?
Gravitational field is about to attrach any massive object towards its centre, therefore force experience by the object would be towardscentre of earth.
Saurabh Kumar 2 months ago
Because it is the direction of the attraction of the Earth
Abhishek Kumar 2 months ago
Because the center of mass of earth is at it’s physical center, so the force of gravity acts at the center.
shubham sharda 2 months ago
why at uniform gravitational field PE = -GMm/r^2 becomes PE=mgh.... I have confusion where to use which formula,,,can u pls clarify that?
First formula is associated with gravitational potential energy between two objects. While second formula is associated with gravitational potential energy agains earyh’s gravitational...
Saurabh Kumar 2 months ago
than q for ur response sir.. but my ndoubt not cleared... why cant I take earth as one object to apply PE = mgh can u pls derive mgh from -GMm/R
buddha 2 months ago
What is black hole? Write an expression for radius (Schwarzschild radius) of event horizon?
The relation between properties of mass and their associated physical constants. Every massive object is believed to exhibit all five properties. However, due to extremely large or extremely...
kanakaraj one year ago
A black hole is defined as a region of spacetime from which gravity prevents anything, including light, from escaping.[1] The theory of general relativity predicts that a sufficiently...
sra1 kumar one year ago
what would be electric field due to Infinite Plane of Charge(gaussian)
dude the answer will come like assuming a cylindrical gaussian surface and the dis distance from the infinite plane would be the radius of the given cylinder thus u will get the result a...
grenade one month ago
i think now i can solve it
rahul one month ago
View all Questions »