End of Topic Test - Refraction

Test yourself on End of Topic Test - Refraction

• Which of the following equations is the correct form of Snell's law?

• The equation for the critical angle is $\sin \theta_c = \frac{n_2}{n_1}$. What is denoted by $n_2$?

• Which of the following terms describes when some light is refracted and some light is reflected at a boundary?

• What happens to the speed of light as it enters a less optically dense medium?

• What is the size of the critical angle of an optical fibre?