What happens if we replace the plano convex lens with glass in Newton rings experiment?

in Newton rings experiment if plane glass plate is replaced by a plane mirror then we shall get-dark fringes only, uniform illumination, bright fringes only, both bright and dark fringes.

Why only plano convex lens is used in Newton’s ring?

There is no loss of energy in interference phenomenon, only redistribution of energy takes place. The rings 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.

What will happen if we use concave lens instead of convex lens?

If the eye lens of a human eye was made of concave lens instead of convex lens then the image formed by the eye lens will be not real they will be virtual so they can not be formed on the retina of eye and there will be no transmission of the signals from the nerve and so image will be formed so we will not be able to …

Why should we use convex lens of large radius of curvature?

A convex lens with large radius of curvature has less curved surfaces and hence the air film b/w less curved surfaces and a plane surface will be appropriately thin to make the interference effect visible..

What will happen if in the Newton’s ring experiment a few drops of a transparent liquid are introduced between the lens and the glass?

23. What will happen if a few drops of a transparent liquid are introduced between the lens and the plate? Ans. The fringes will contract, with diameter reduced by a factor of μ .

Why Newton’s ring is circular in shape and what will happen if we use white light instead of sodium light?

Newton’s rings scene in Plano-convex with their flat surface in contact.in white light the Rings are Rainbow colours because different wavelength of each colour interview at different location. when white light is used in Newton’s ring experiment circular rings of rainbow colour will appear….

What will be effect on Newton’s ring if a plano-convex lens of small radius of curvature is used?

The diameter of the rings will decrease because the diameter of the rings is inversely proportional to the refractive index. Q. What will happen if we use a lens of small radius of curvature? Then the rings will be of smaller diameter and there is chance of error while taking the readings.

Why sodium light is used in Newton ring?

Sodium light consists of a single wavelength of 5892 A where 1 Angstrom equals 1 * 10E-10 m. So the sodium light can produce well defined fringes. (Actually, the sodium light consists of 2 wavelengths, but they are very close together and suitable for the Newton’s rings experiment.)

When and why do we use convex or concave lens in our eyeglasses?

Concave Lenses Are for the Nearsighted, Convex for the Farsighted. Concave lenses are used in eyeglasses that correct nearsightedness. Because the distance between the eye’s lens and retina in nearsighted people is longer than it should be, such people are unable to make out distant objects clearly.

What is difference between concave lens and convex lens?

A convex lens is thicker at the centre and thinner at the edges. A concave lens is thicker at the edges and thinner at the centre. Due to the converging rays, it is called a converging lens.

What is the conclusion of Newton’s ring experiment?

Conclusions. The proposed method can obtain the radius data of each order closed circular fringes. Also, it has several other advantages, including ability of good anti-noise, sub-pixel accuracy and high reliability, and easy to in-situ use.

Will there be any effect on the Newton’s rings pattern if few drops of transparent liquid is inserted between plano-convex lens and plane glass plate Why?

Q. What will happen if few drops of liquid is introduced between the lens and glass? A. The diameter of the rings will decrease because the diameter of the rings is inversely proportional to the refractive index.

How are rings formed in a plano convex lens?

The rings are formed due to path difference which is equal to the length traversed by a ray of light in the air between the lower surface of the lens and the glass beneath it. Using a bio convex lens instead of plano convex will still form the rings of the same respective radii as if we had used a plano convex lens of same curvature.

What happens if we use a bio convex lens instead of plano convex?

Using a bio convex lens instead of plano convex will still form the rings of the same respective radii as if we had used a plano convex lens of same curvature. The image may appear somewhat less clear though, due to some change in direction of rays from the upper surface of the lens

What is the nature of fringes in Newton’s Ring experiment?

In Newton’s ring experiment, a plano-concave air film is formed between the glass slide and the convex lens. The formation of concentric circular fringes can be seen by interference. Irrespective of the nature of the lens ( whether plano or biconvex) for the same of radius of curvature, there will be no difference in the nature of the fringes.

Why do we need a convex lens with large radius of curvature?

A convex lens with large radius of curvature has less curved surfaces and hence the air film b/w less curved surfaces and a plane surface will be appropriately thin to make the interference effect visible.. Originally Answered: Why do you require a convex lens with a large radius of curvature in Newton’s rings experiment?