Define reflection, refraction and also state their laws
Answers
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Refraction : The phenomenon of change in the direction of light when it passes from one transparent medium to another is called refraction. Laws of refraction: (i) The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane.
Answer:
Reflection :-Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves Ex:- The law of reflection refers to the reflection of light-rays off smooth conducting surfaces, such as polished metal or metal-coated glass mirrors. ... The angle of reflection is equal to the angle of incidence. Both angles are measured with respect to the normal to the mirror
refraction:-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. Ex:-s of refraction state that: ... The incident ray, reflected ray and the normal, to the interface of any two given mediums; all lie in the same plane. The ratio of the sine of the angle of incidence and sine of the angle of refraction is constant.