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A plano-convex lens is used in Newton's rings experiment because the convex surface of the lens helps to create a well-defined thin air gap when placed against a flat glass plate. This air gap is where the interference pattern, known as Newton's rings, forms when illuminated with monochromatic light. The curvature of the convex surface of the lens also helps to distribute the pressure evenly, ensuring a better contact between the lens and the glass plate.
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What happens when a silver plate is used in newton's rings experiment?
When a silver plate is used in Newton's rings experiment, interference fringes are observed due to variations in the thickness of the air gap between the plate and a plano-convex lens placed on a flat glass surface. This is because of the reflection of light waves from both surfaces, leading to constructive and destructive interference patterns that form the rings. By analyzing the pattern of these rings, one can determine the thickness of the air gap at different points.
Why do you take plano convex lens with a spherical surface of a large radius of curvayure in the newtons ring experimental set up?
In Newton's ring experiment, a plano-convex lens with a large radius of curvature is used to ensure that the interference fringes produced between the lens and the flat glass plate can be easily observed and analyzed. The large radius of curvature helps in creating distinct and well-defined interference patterns, which are essential for accurate measurement and analysis of the rings.
Where are the rings formed in newton's ring experiment?
The rings are formed due to interference between two surfaces – a convex lens and a flat glass plate placed in contact. The rings are most prominent at the point of contact between the two surfaces.
How are newtons rings are formed?
Newton's rings are formed due to the interference of light waves reflected between a plano-convex lens and a flat glass surface in contact with each other. This interference creates alternating dark and bright rings, with the center being a dark spot. The varying thickness of the air gap between the lens and the glass surface causes the light waves to interfere constructively and destructively, resulting in the pattern of rings.
What is the fringe width of NEWTON RING?
The fringe width of Newton rings is the distance between two consecutive bright or dark fringes observed when a plano-convex lens is placed on a flat glass plate. It is given by the formula [ w = \lambda \cdot R / (D - R) ], where ( \lambda ) is the wavelength of light, ( R ) is the radius of curvature of the lens, and ( D ) is the diameter of the bright ring.
What is the use of the newton's rings?
newtons ring is formed due to the consequtive circle of different radius of bright and dark in which the centre is dark
Why are rings circular in newtons rings?
Since a plano-convex lens is being used in Newton's Rings .. that's why=the fringes are seen circular from above, on the glass plate.=
What happens when a silver plate is used in newton's rings experiment?
When a silver plate is used in Newton's rings experiment, interference fringes are observed due to variations in the thickness of the air gap between the plate and a plano-convex lens placed on a flat glass surface. This is because of the reflection of light waves from both surfaces, leading to constructive and destructive interference patterns that form the rings. By analyzing the pattern of these rings, one can determine the thickness of the air gap at different points.
Why do you take plano convex lens with a spherical surface of a large radius of curvayure in the newtons ring experimental set up?
In Newton's ring experiment, a plano-convex lens with a large radius of curvature is used to ensure that the interference fringes produced between the lens and the flat glass plate can be easily observed and analyzed. The large radius of curvature helps in creating distinct and well-defined interference patterns, which are essential for accurate measurement and analysis of the rings.
Why we get circular rings in newton's ring exp?
Circular rings in Newton's ring experiment occur due to interference between the light waves reflected from the top and bottom surfaces of a plano-convex lens placed on a flat glass plate. This interference pattern is caused by the varying thickness of the air gap between the two surfaces, resulting in constructive and destructive interference at different points, leading to the formation of concentric rings.
Where are the rings formed in newton's ring experiment?
The rings are formed due to interference between two surfaces – a convex lens and a flat glass plate placed in contact. The rings are most prominent at the point of contact between the two surfaces.
Why are the fringes circular in newton's rings?
intensity of ring formed depends upon the thickness of air coloumn b\w the lens & glass plate.and the locus of points having same thickness of aircolumn is a circle,with the center as the point of contact of b\w the glass plate and lens.
What is the cause of Newton's rings?
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. The thickness of film at the point of contact is zero. If monochromatic light is allowed to fall normally on the lens, and the film is viewed in reflected light, alternate bright and dark concentric rings are seen around the point of contact. These rings were first discovered by Newton, that's why they are called NEWTON'S RINGS .experimental setupPattern of Newton's RingWHY NEWTON'S RINGS ARE FORMEDNewton's rings are formed due to interference between the light waves reflected from the top and bottom surfaces of the air film formed between the lens and glass sheet. EXPLANATIONThe phenomenon of the formation of theNewton's rings can be explained on the basis of wave theory of light.An air film of varying thickness is formed between the lens and the glass sheet.When a light ray is incident on the upper surface of the lens, it is reflected as well as refracted.When the refracted ray strikes the glass sheet, it undergo a phase change of 180O on reflection.Interference occurs between the two waves which interfere constructively if path difference between them is (m+1/2)land destructively if path difference between them is mlproducing alternate bright and dark rings.
How are newtons rings are formed?
Newton's rings are formed due to the interference of light waves reflected between a plano-convex lens and a flat glass surface in contact with each other. This interference creates alternating dark and bright rings, with the center being a dark spot. The varying thickness of the air gap between the lens and the glass surface causes the light waves to interfere constructively and destructively, resulting in the pattern of rings.
What is the fringe width of NEWTON RING?
The fringe width of Newton rings is the distance between two consecutive bright or dark fringes observed when a plano-convex lens is placed on a flat glass plate. It is given by the formula [ w = \lambda \cdot R / (D - R) ], where ( \lambda ) is the wavelength of light, ( R ) is the radius of curvature of the lens, and ( D ) is the diameter of the bright ring.
Why center of newton ring is dark?
The center of a Newton's ring appears dark because of destructive interference between the reflected light waves. When the light reflects off the top and bottom surfaces of the air film between the lens and the flat glass plate, the waves interfere such that they cancel each other out at the center, resulting in darkness.
What is meant by newton ring and Explain the formation of newton?
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. The thickness of film at the point of contact is zero. If monochromatic light is allowed to fall normally on the lens, and the film is viewed in reflected light, alternate bright and dark concentric rings are seen around the point of contact. These rings were first discovered by Newton, that's why they are called NEWTON'S RINGS .experimental setupPattern of Newton's RingWHY NEWTON'S RINGS ARE FORMEDNewton's rings are formed due to interference between the light waves reflected from the top and bottom surfaces of the air film formed between the lens and glass sheet. EXPLANATIONThe phenomenon of the formation of theNewton's rings can be explained on the basis of wave theory of light.An air film of varying thickness is formed between the lens and the glass sheet.When a light ray is incident on the upper surface of the lens, it is reflected as well as refracted.When the refracted ray strikes the glass sheet, it undergo a phase change of 180O on reflection.Interference occurs between the two waves which interfere constructively if path difference between them is (m+1/2)land destructively if path difference between them is mlproducing alternate bright and dark rings.
