Problem 3 [4 marks] A convex lens has a focal length of 5cm, where the magnitude of the radius of curvatures of both surfaces are the same. Assume the index of refraction of the glass is 1.5 and the index of refraction of air is 1. [a] What is the radius of curvature of each surface? {In} If the index of the material is 2 what is the radius of curvature? [c] Using the thin lens approximation, draw the image formation when an object is placed 4 and 6 cm from the lens, and calculate the magnifications