Lesson Plan: The Dispersive Power of a Prism Physics • Second Year of Secondary School
This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to calculate the dispersive power of a prism given the refractive indices of the different colors of light passing through it.
Objectives
Students will be able to
- recognize that the shorter the wavelength of light, the greater its deviation by a prism,
- use the formula to relate the dispersive power of a prism to the angles of deviation of different wavelengths of light passing through it,
- use the formula to relate the dispersive power of a prism to the refractive indexes for the different wavelengths of light passing through it.
Prerequisites
Students should already be familiar with
- deviation by prisms,
- dispersion.
Exclusions
Students will not cover
- calculations of deviation angles.
