a. Briefly explain why the property of total reflection is useful in using a triangular prism like a mirror. At which surface is total internal reflection possible?

b. What is the critical angle for this prism? Explain your conclusion.

c. Calculate the smallest possible angle of incidence, 0i, at which light can be incident and not be totally internally reflected. Explain your work.

In some optical devices it is sometimes better to use a triangular prism as a mirror instead of an actual mirror. Consider a prism similar to that from the previous exercise with refractive index n = 1.50 (we will ignore the effects of dispersion for this exercise to keep it simple) and apex angle & = 60.0. Light is incident at an arbitrary unknown angle as shown below. D - - a. Briefly explain why the property of total reflection is useful in using a triangular prism like a mirror. At which surface is total internal reflection possible? b. What is the critical angle for this prism? Explain your conclusion. c. Calculate the smallest possible angle of incidence, 0;, at which light can be incident and not be totally internally reflected. Explain your work.In some optical devices it is sometimes better to use a triangular prism as a mirror instead of an actual mirror. Consider a prism similarto that from the previous exercise with refractive index n = 1.50 (we will ignore the effects of dispersion for this exercise to keep it simple) and apex angle i) : 60.00. Light is incident at an arbitrary unknown angle as shown below. all' a. Briefly explain why the property of total reflection is useful in using a triangular prism like a mirror. At which surface is total internal reflection possible? b. What is the critical angle for this prism? Explain your conclusion. c. Calculate the smallest possible angle of incidence, 0, at which light can be incident and not be totally internally reflected. Explain your work