Critical Angle

Rarely Tested

Critical Angle

### Formula

$$\sin C=\frac{1}{\mu}$$

### Terminologies

- C β†’ Critical angle.

- ΞΌ β†’ Refractive index of denser medium.

### Conditions / Special Cases

For total internal reflection:

$$i>C$$

### Usage

- Used in total internal reflection problems.

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