solve all part please

Physics ) On a separate sheet of paper, make a diagram showing a light ray passing into and out of the Cylindrical Lens. Show the correct angles of incidence and refraction at both surfaces traversed by the ray. Use arrow heads to indicate the direction of propagation of the ray. Now reverse the arrows on the light ray. Show that the new angles of incidence and refraction are still consistent with the Law of Refraction. This is the principle of optical reversibility. 5 Does the principle of optical reversibility hold for Reflection as well as Refraction? Explain. Part III Data Flat Surface Part III Data Curved Surface Incidence Incidence Refration (") Refration (') e (') (') 10 6.5 6.5 10 20 12.5 12.5 20 30 19 19 30 40 25 25 40 50 30.5 30.5 50 60 35 35 60 70 38.5 38.5 70 80 40.5 40.5 80 I need those two questions. please make sure is typed so is easy for me to understand. all the data is on the second picture. Thank you