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Cahyono, Monica Adelia Kintan
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Education Physics

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Simple Measurements of Refractive Index of Glycerine using a Spherical Flask Cahyono, Monica Adelia Kintan; Santosa, Edi
Jurnal Materi dan Pembelajaran Fisika Vol 15, No 1 (2025): Jurnal Materi dan Pembelajaran Fisika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jmpf.v15i1.100923

Abstract

The refractive index of glycerine is measured using a spherical lens. This setup functions as a convex lens. Focal length measurements are carried out using two standard methods, namely the direct method and the lens formula method. First, the focal length is determined directly using parallel rays. Second, we measure the object distance and the image distance. From the obtained focal length, the refractive index of the glycerine is then calculated. Using various concentrations, we found that the refractive index of glycerine depends linearly on its concentration linearly. The refractive index of pure water (0% glycerine) and glycerineat concentrations of 60%, 80%, and 100% are found to be (1.33±0.02), (1.42±0.03), (1.46±0.03), (1.49±0.04), respectively. This experiment uses simple equipment available in most laboratories and can be carried out in schools.
Co-Authors Edi Santosa