Angle of minimum deviation experiment for class 12. Prism experiment/Angle of minimum deviation

Everything you need to know about the prism, theory and practice with a goniometer. Summary :

introduction/numerical simulation.

1. The 4 prism formulas

2. Condition of emergence of light rays

3. Minimum deviation.

4. Cauchy's law and measurement of an unknown wavelength

4. Measurement in the optics lab

5. Exploitation and calculation of uncertainty

A light ray which enters a prism in principle undergoes two refractions before leaving it, it is therefore deviated by a certain angle called deviation.

We first study here the condition of emergence of a ray (so that it does not undergo a total reflection on the second diopter); then the deviation of a ray which would emerge.

The deviation depends only on the angle of incidence at the first diopter if A (the angle at the top of the prism) and n the index of the prism are known. We show graphically that this passes through a minimum, and obtain a formula giving this minimum deviation as a function of i, n and A.

A video taken from the E-Learning channel, studying the prism and its relationships with the aim of determining the expression of minimum deviation.

For the first time, complete training in physics, chemistry and mathematics for students in preparatory classes. The training is divided into a set of themes each containing:

1) Detailed course book (PDF format).

2) Videos giving a summary of the course with some application examples.

3) Videos containing classic cases usually as part of a competition.

4) Video on all the course questions related to the theme.

5) Set of classic corrected problems structured extracts from one or more competitions (PDF format).

Angle of minimum deviation experiment for class 12. Prism experiment/Angle of minimum deviation

Everything you need to know about the prism, theory and practice with a goniometer. Summary :

introduction/numerical simulation.

1. The 4 prism formulas

2. Condition of emergence of light rays

3. Minimum deviation.

4. Cauchy's law and measurement of an unknown wavelength

4. Measurement in the optics lab

5. Exploitation and calculation of uncertainty

A light ray which enters a prism in principle undergoes two refractions before leaving it, it is therefore deviated by a certain angle called deviation.

We first study here the condition of emergence of a ray (so that it does not undergo a total reflection on the second diopter); then the deviation of a ray which would emerge.

The deviation depends only on the angle of incidence at the first diopter if A (the angle at the top of the prism) and n the index of the prism are known. We show graphically that this passes through a minimum, and obtain a formula giving this minimum deviation as a function of i, n and A.

A video taken from the E-Learning channel, studying the prism and its relationships with the aim of determining the expression of minimum deviation.

For the first time, complete training in physics, chemistry and mathematics for students in preparatory classes. The training is divided into a set of themes each containing:

1) Detailed course book (PDF format).

2) Videos giving a summary of the course with some application examples.

3) Videos containing classic cases usually as part of a competition.

4) Video on all the course questions related to the theme.

5) Set of classic corrected problems structured extracts from one or more competitions (PDF format).

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