Define term 'Refraction'.?

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When light travels from one medium to another medium , its direction gets diverted or changed in the second medium . This is called refraction!

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The change in direction of light when it passes from one medium to another obliquely is called refraction of light.

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The phenomenon of change of direction of light due to the change of medium is known as Refraction.

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Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium..

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The fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely thorough the interface b/w one medium and another or through a medium of varying density....

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Refraction is the bending of a wave when it enters a medium where its speed is different. We can define it as:

Refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium

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Refraction of light is the phenomenon of change in the path of light in going from one medium to another. In going from a rarer to a denser medium, the ray of light bends towards normal and in going from a denser to a rarer medium, the ray of light bends away from normal.

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The fact or phenomenon of light, radio waves, etc. being deflected in passing obliquely through the interface between one medium and another or through a medium of varying density.
change in direction of propagation of any wave as a result of its travelling at different speeds at different points along the wave front.
measurement of the focusing characteristics of an eye or eyes.

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In physics, refraction is the change in direction of a wave passing from one medium to another or from a gradual change in the medium. Refraction of light is the most commonly observed phenomenon, but other waves such as sound waves and water waves also experience refraction.

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Refraction:- When light passes from one medium to another medium through different densities, the direction of the propagation changes in the second medium. This phenomenon is said to be 'Refraction'.

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Bending of waves while changing its medium is refraction. it happens because of change in the speed of waves.

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Refraction of light is the phenomenon by which there is a change in direction of light ray when it travels from one medium to another.

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Refraction is the bending of a light or sound wave, or the way the light bends when entering the eye to form an image on the retina

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Refraction is the bouncing back of light when it strikes on a polished surface like mirrors.

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When light rays travelling in a medium are incident on a transparent surface of another medium they are bent as they travel in second medium.

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Refraction Light waves bend as they pass from one substance to another. This pencil appears to be bent at various angles as the light passes through air only; through air and glass; through water, air, and glass; and through water and glass. is called Refraction...

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Refraction is the phenomenon of bending of light when it enters from one medium to another

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The phenomenon of light which bends on travelling from one medium to another.

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Refraction is a phenomenon that occurs when light travels from one transparent medium to another medium with a different refractive index, causing the light to bend or change direction. This change in direction occurs because the speed of light changes as it passes through the medium. The bending of light is caused by the difference in the speed of light in the two media.

Causes of Refraction:
Refraction occurs due to the following reasons:
- Change in the speed of light: The speed of light changes when it passes from one medium to another, causing the light to bend or change direction.
- Change in the angle of incidence: The angle of incidence changes when light passes from one medium to another, causing the light to bend.

Examples of Refraction:
Some examples of refraction are:
- The bending of a pencil in a glass of water.
- The formation of a rainbow when sunlight passes through water droplets.
- The apparent bending of a straw when it is placed in a glass of water.

Applications of Refraction:
Refraction has several applications in our daily life, such as:
- In the design of lenses for glasses, cameras, and other optical instruments.
- In the formation of images in the human eye.
- In the design of optical fibers used in telecommunication.

Conclusion:
In conclusion, refraction is a phenomenon that occurs when light travels from one medium to another with a different refractive index, causing the light to bend or change direction. This phenomenon has several applications in our daily life, including the design of lenses, formation of images in the human eye, and design of optical fibers.

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