IB Physics Diffraction Grating
/This tutorial sheet is about coherent monochromatic light incident on a diffraction grating.
- The incident light is not normal to the grating. Can we use the equation d sin𝜃 = n𝜆 in this situation?
- In question 1 the angle of incidence of the light on the grating is ϕ. Show that d ( sin(𝜃 - ϕ) - sinϕ ) = n𝜆.