Investigating optical properties of Jelly

Investigating optical properties of Jelly.

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when a beam of light of any wavelength travels, it bends towards or away from its normal and this phenomena is known as refraction.

The refractive index, n, is given:. While travelling from less to a more optically dense medium, the beam of light slows down and bends towards the normal and while travelling from a dense to a less optically dense medium, the beam of light speeds up and bends away from the normal.

Strawberry Jelly is an optically denser medium compared to air and hence, when an incident beam of light travels from air into the Jelly, it slows down and bends towards the normal.

In this investigation, the refractive index of a translucent cube of strawberry Jelly is investigated. Regardless of the ingredients, Jelly is formed by crystallization and the rigidity of the structure of the crystals is dependent on its temperature.

Thus, the temperature can alter the optical density of Jelly as a result of which, the refractive index of the translucent cube of Strawberry Jelly changes with temperature. ..

Sharp brimmed rectangular bowl – 1 To cut equal dimensions of Jelly cuboid for each experiment. 3. Low walled rectangular bowl – 1 To hold the cuboid of Jelly while light is being passed through it. 4. White paper board –

1 To function as the plane of refraction. 5. Board pins – 6 To mark the positons of the incident and refracted rays. 6. Protractor ±0.5o 1 To measure the angles of incidence and refraction. 7. Pencil and Ruler – 1 To trace the path of the beam of light. 8. Electronic water bath – 1 To change the temperature of the Jelly and stably maintain it. 9.

Thermometer ±0.25oC 1 To check the temperature of the Jelly. PROCEDURE: 1. Excess of the same kind of Jelly was prepared by following the manufacturer’s instruction at the back of the packaging. 2. The white paper board was laid out flat on the work table and the low walled rectangular bowl was placed on top of it. 3. Using a pencil and