Evaluate diameters of bright and dark newtons rings, Physics

Assignment Help:

Q. Evaluate Diameters of Bright and Dark Newtons Rings?

Let ‘R' is the radius of curvature of a Plano-convex lens resting at a glass plate PQ. If t be the thickness of air film at a point B, a nth order ring of radius AB = rn is formed there. Since the thickness of air film at point of contact of Plano-convex lens and glass plate is zero (t=0), then from equation (ix) rn = o i.e. the radius of ring is zero, implies a point, (a point has zero radius). That's the reason Newton's ring have a dark centre.

The centre may be bright if some dust particles are there and plane glass plate and Plano convex lens are not in contract then t ≠ 0.


Related Discussions:- Evaluate diameters of bright and dark newtons rings

Determine the bending moment, Determine the Shear Force in kN rounded to 1 ...

Determine the Shear Force in kN rounded to 1 DP and Bending Moment in kN.m rounded to 1 DP at point C in the beam when the UDL on the beam is P52 kN/m (as for the previous question

Energy, What are the kinds of energy?

What are the kinds of energy?

Mutual induction, i want to write my assignment based on mutual induction b...

i want to write my assignment based on mutual induction between two coils.please help!

Gold leaf electroscope, Gold Leaf Electroscope: A gold leaf electroscop...

Gold Leaf Electroscope: A gold leaf electroscope is a device that can be used for notice charge. By the use of this device we can also detect whether a body is positively or ne

Working and construction of moving coil galvanometer, Get a mathematical ex...

Get a mathematical expression for the torque on a loop placed in a uniform magnetic filed. Define the working and construction of moving coil galvanometer?

Determine the speed of cannonball, A 1200-kg cannon is placed at rest on an...

A 1200-kg cannon is placed at rest on an ice rink. A 95.0-kg cannonball is shot from the cannon. If the cannon recoils at a speed of 6.80 m/s. What is the speed of the canno

Classification of dielectric, There are thousands of insulating materials a...

There are thousands of insulating materials available in the market. Insulations technology is one of the few branches where the number of materials is very large. Any special requ

Find the electric potential, Q. Find the electric potential at a distance 0...

Q. Find the electric potential at a distance 0.09 m from a charge of 4 X 10 -7 C. The electric potential V = ( 1/4πεo ) q /r = ( 9 X 10 9 X 4 X 10 -7 )/ 9 X 10 -2 = 4 X 10

Process of heating of thor, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd