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Do interference effects occur for sound waves?

Yes,interference effect occurs for sound waves despite of the fact that sound waves are longitudinal waves.When two sound waves of same frequency and same amplitude in the same direction superpose then the interference of sound waves occurs. For example two loudspeakers emit two harmonic sound waves of fixed frequency produced by an audio generator.When these waves combine at a point ...

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Why diffraction grating have closely spaced rulings?

A diffraction grating is a glass plate having a large number of close parallel equidistant slits mechanically ruled on it.A diffraction grating is used to study the diffraction effects of light. Since the phenomenon of diffraction is found to be prominent when the wavelength of light is large as compared with the size of the opening or aperture of the ...

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Image formation by convex and concave lens ray diagrams

 converging and diverging lenses ray diagrams In mirrors images are formed through reflection but lenses form images through refraction.This is explained with the help of ray diagrams as follows: Image formation by convex lens ray diagrams Image formation in convex lens can be explained with the help of three principal rays shown in figure. The ray parallel to the principal ...

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Total internal reflection examples and applications

Total internal reflection

What is total internal reflection? When a ray of light travelling in denser medium enters into a rarer medium, it bends away from the normal. If the angle of incidence ‘i’ increases’ the angle of refraction ‘r’ also increases. For a particular value of the angle of incidence, the angle of refraction becomes 90°. The angle of incidence, that cause ...

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Total internal reflection:conditions,uses and examples

Total Internal Reflection One of the qualities of any optically transparent material is the speed at which light travels within the material, i.e., it depends upon the refractive index n of the material. The index of refraction is merely the ratio of the speed of light c in vacuum to the speed of light v in that material.Expressed mathematically: n=c ...

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Diffraction grating formula and equation in physics

What is diffraction grating? “The diffraction grating is a useful device for analyzing light sources.It consists of a large number of equally spaced parallel slits.”Its working principle is based on the phenomenon of diffraction.The space between lines act as slits and these slits diffract the light waves thereby  producing a large number of beams which interfere in such a way ...

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difference between fresnel and fraunhofer diffraction

what is Fresnel’s diffraction? Fresnel diffraction can be observed if the source of light and the screen at which diffraction pattern is formed are kept at finite distance from the diffracting obstacle.In this situation the wave fronts falling on the obstacle are not plane.Similarly the wave fronts leaving the obstacle are not plane. what is Fraunhofer diffraction? Fraunhofer diffraction can ...

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difference between microscope and telescope

Difference table between microscope and telescope:     Microscope      Telescope                                                                                                 ...

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Difference between interference and diffraction of light

Interference of light The modification in the distribution of light energy due to superposition of two or more waves is called interference of light. Conditions for interference Light source should be monochromatic. Light source should be coherent mean they should not be independent but should be subsidiary source and derived from a single source. The light source should be narrow ...

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newton’s rings experiment with animation

Newton’s Ring: Newton’s rings 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. An air wedge film can be formed by placing a plano-convex lens on a flat glass plate.The thickness of film is zero where the lens and the plate are in contact ...

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