If the radius of curvature of the lens is 100 cm, find the wave length of the light. Newton's Ring Experiment Theory. This amazingly enough answered every question in my laboratory write up. realli it was very awesome,very helpful in enhancing and clearing the concepts.. best website for viva i'm uncertain why he's getting inducted. Newtons Ring Experiment Viva. A.At the point of contact the path difference is zero but one of the rays is reflected so the effective path difference becomes  λ/2 thus the condition of minimum intensity is created hence it is a dark spot. /CreationDate(D:20191111161047+00'00') The Funk brothers, Randy Savage, Arn Anderson, hell, even the main suitable Warrior is greater worth than Eddie Graham. 2. Theoritical Questions: 1. /Width 300 What are Newton’s ring? 3 0 obj Newtons ring experiment, Cogito Ergo Sum /ColorTransform 0 Sample viva voce questions : The air film formed is wedge shaped locus of point of intersection is equal to the thickness of circles . Jun 10, 2020 - Newton's ring experiment viva questions are listed here. /S/Transparency Newton’s ring is a process in which Circular bright and dark fringes obtained due to air film enclosed between a Plano-convex lens and a glass plate. 4. Questions 1. /Encoding/Identity-H A.The diameter of the rings will decrease because the diameter of the rings is inversely proportional to the refractive index. /Type/Font Newton’s Rings Experiment Aim: To determine the wavelength of monochromatic light (sodium light) using Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Introduction In 1717, Sir Isaac Newton studied the rings pattern generated due to interference of light. Thank you! 2) What will happen if a liquid having refractive index higher than that of the lens as well as the plate is inserted between them...?? Fig.1. Newton's ring experiment mainly contains following questions… Q.What are Newton’s Rings? /ToUnicode 119 0 R What is the superposition principle? /ColorSpace/DeviceRGB endobj Where have the fringes formed? Describe how does the Newton’s ring changes when air medium is replaced by a liquid medium (Understand level) In-class Compare the… << >> NEWTONS RING BY TRANSMITTED LIGHT Condition of maxima: 2µt=nλ Condition of minima: 2µt=(n+1/2)λ 10. /F9 9 0 R 2. /X11 11 0 R /Height 150 If the radius of plno convex lens is 100 cm, compute the wavelength of light used. 13.) 4. accha kar rahe hain. Newton rings are Alternate dark and bright rings formed due to the presence of air film when the plano-convex lens is placed on the glass plate is called newtons rings. Answer Save. View Academics in Newtons Ring Experiment] on Academia.edu. /Annots[17 0 R 18 0 R 19 0 R 20 0 R 21 0 R 22 0 R 23 0 R 24 0 R 25 0 R 26 0 R 27 0 R 28 0 R 29 0 R 30 0 R] In a Newton’s rings experiment the diameter of the 15 th ring was found to be 0.59 cm and that of the 5 th ring is 0.336 cm. Excellent questions we can score full marks in viva through this questions. A.It turns the light rays coming from an extended source to ninety degrees and so the rays fall normally on the plano convex lens. /F10 10 0 R Thread / Post : Tags: Title: newton ring experiment viva questions with answers Page Link: newton ring experiment viva questions with answers - Posted By: ganesh_raj Created at: Sunday 16th of April 2017 10:27:05 AM: What happen when we use mercury lamp instead of sodium vapour lamp.....etc [:=Read Full Message Here=:]: Title: vtu 3rd sem aec lav viva question and answer Ans: Diameter of a ring depends on the wavelength of light used, refractive index of the medium between lens and glass plate, order of the ring and radius of curvature of Planocovex lens. Let’s consider a dark ring with radius r at a point where the separation is t. The right angled triangle shown in red has a height R–t so Pythagoras’ theorem gives us. /ModDate(D:20191111181047+02'00') When a plano-convex lens with its convex surface is placed on a plane glass sheet, an air film of gradually increasing thickness outward is formed between the lens and the sheet. What happened if I replace the plano-convex lens with the plano-concave lens? A.Few colored fringes will be observed near the center. Change ), You are commenting using your Twitter account. Objective Determination of the wavelength of a monochromatic source by using Newton’s Ring … Read more Newtons Ring Experiment 18-Amazing Viva Questions Newton's Ring Experiment Theory. /Contents 31 0 R << >> /BaseFont/ArialMT Radius of curvature of lower surface of lens is 2m. ... 4 In Newton’s ring experiment the diameter of the 15 th ring was found to be 0.59 cm and that of the 5th ring was 0.336 cm. /Type/Page The study came up with research questions so as to ascertain the above stated objectives of the study. It is really helpful for practical examination. These rings are known as Newton’s rings. It is named after the Scientist, Sir Isaac newton. If the radius of curvature of plano-convex lens is much greater than distance ‘r’ and the system is viewed through the above, the pattern of dark & bright ring is observed. Newton’s ring is a process in which Circular bright and dark fringes obtained due to air film enclosed between a Plano-convex lens and a glass plate. Newton’s rings have been named after English physicist and mathematician Sir Isaac Newton, who was the first to observe the effect in 1704. Newtons Ring Experiment Viva an Introduction newtons ring experiment viva include many concepts of interference, you can say it includes all the basic fundamental in this experiment. If the radius of curvature of the lens is 100 cm, find the wave length of the light. ��(ICC_PROFILE mntrRGB XYZ acsp �� �- desc � trXYZ d gXYZ x bXYZ � rTRC � (gTRC � (bTRC � (wtpt � cprt �. Q.What if sodium light is replaced with white light? /G3 3 0 R The radii of the rings depend on the air gap refraction. Experiment8. After going through the theory and pretest, click the "Simulation" tab 2. https://answer2questn.blogspot.com/2013/03/newtons-rings-q1.html It is named after the Scientist, Sir Isaac Newton. The simulator will display the interactive questions, attempt the questions 3. /G14 14 0 R NEWTON’S RING METHOD Background Coherent sources of light, ... Procedure: The experimental set-up used for the experiment is shown in g.1(a). 0 0. /F15 15 0 R What happened if we replaced yellow light with green light? View Newton's ring.pdf from MATH 111 at Pandit Deendayal Petroleum University. What will happen if a point source or an illuminated slit is used instead of the extended source? 4. A.Then we will have dark and bright fringes in shape of a line. Introduction In 1717, Sir Isaac Newton studied the rings pattern generated due to interference of light. Home/Physics questions/ Newton’s ring experiment with animation. A.Alternate dark and bright rings formed due to presence of air film when plano convex lens is placed on glass plate is called newtons rings. Newton's rings are a fun demonstration of the wave nature of light, and also of the fact that white light is made up of many components of different wavelengths. 11. >> 1 0 obj ( Log Out /  [June 2005, Set No. View all posts by Divya Prakash Srivastava. Newtons Ring Experiment Viva Det erminat ion of t he wavelengt h of a monochromat ic source by using Newt on’s Ring experiment T he key idea behind Newt on’s Rings experiment is t he t hin f ilm f ormat ion bet ween a plane-convex lens and a glass plat e. Q.What will happen if we replace the lens with plane glass? Determine how many of those rings are produced. This can be seen from the formula r 2 = (m + ½) λa, (3), as r 2 α λ 1. Indulge into some deep and suspenseful blogs here. << 5. >> Q.What will happen if we use a lens of small radius of curvature? Newton rings are Alternate dark and bright rings formed due to the presence of air film when the plano-convex lens is placed on the glass plate is called newtons rings. Fig 5.19 shows an experimental arrangement for producing and observing Newton’s rings. /Parent 113 0 R /G16 16 0 R A.This is so because the air film formed is wedge shaped and loci of points of equal thickness are circles concentric with point of contact. Newtons Ring. ya,dear fellow scientists i appreciate your support and comments,so keep it up. Life is all about Experiences. A.They are formed as a result of interference between light waves reflected from the upper and lower surfaces of the air film developed between the convex surface of plano convex lens and plane glass plate. >> ( Log Out /  When a plano-convex surface is placed on a glass plate, an air film of gradually increasing thickness is formed between the two and monochromatic light is allowed to fall normally on film and viewed in reflected light, alternate dark and bright rings are observed. Newton observed these rings when placing a spherically shaped piece of glass (a lens) touching a flat piece of glass. Optics Newton’s ring experiment with animation. 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