how do you find experimentally the refractive index of material of a prism
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To find refractive index of a material through prism, Take a prism and place it on the white chart in such a way that the triangular base of the prism is on the chart.
Explanation:
- Draw a line around the prism using a pencil. Remove the prism.
- Name all the points
- Find the angle of prism between two sides
- This angle is angle of incidence and note it in a table.
- Place the prism in its position again.
- Find the angle of emergence and remove prism
- The angle between these two rays is angle of deviatio.
- Do same for various angles of incidence such as 40°, 50° etc.
- The refractive index of prism n = Sin [(A + D)/2] / sin A/2.
Learn more about refractive Index here:
What is refractive Index
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