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To find the refractive index of light in different materials.
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- Words:
- 673
- Submitted:
- Thu Jul 11 2002
... TILLE :what are the refractive indexes of light in different material? AIM : To find the refractive index of light in different materials. APPARATUS : Ruler Protractor Plain paper Ray box Perspex block Water Container Glass block DIAGRAM BACKGROUND INFORMATION When a light ray travels from air into a clear material such as glass or water, you can see the ray change direction. This is called refraction. Refraction happens because light travels faster in the air than in other substances. The amount by which a light ray bends when it goes from air into another material depends on two things : (a) what the material is (b) The angle of incidence The angle of incidence is the size of the angles between the ray before it enters the substance and the normal. The angle of refraction is the angle between the ray after it has bent , and the normal. The amount by which
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