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Physics · Unit 2 · Waves · Wave properties

Determine the refractive index of a transparent substance from experimental data.

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Question 1

A student measures the angle of incidence and angle of refraction for light passing from air into a glass block. The results are: angle of incidence = $42°$, angle of refraction = $26°$. The refractive index of air is $1.00$. Determine the refractive index of the glass.

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Question 2

A student investigates the refraction of light through an unknown transparent block. The student directs a laser beam at various angles of incidence and measures the corresponding angles of refraction. The experimental data contains several measurements where the refracted ray deviates slightly from the expected path due to surface irregularities. Determine the refractive index of the block from the data provided and justify your choice of data treatment.

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Question 3

A student investigates the refractive index of a transparent acrylic block by directing a laser beam at different angles of incidence and measuring the corresponding angles of refraction. The measurements are recorded in the table below. Refer to the table and determine the refractive index of the acrylic block. Justify your method and evaluate the reliability of the result.

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