#3 (25 pts) We want to make an industrial flashlight to be used in the salt water of the Dead Sea with a refractive index ne = 1.375. This lamp must be designed with a plano-convex lens made of glass with an indexn= 1.5 whose thickness and radius of curvature are of the same value |R|= 3cm. A bulb S (real object) will be attached to a small non-reflecting screen and placed in front of a spherical mirror with radius of curvature |Rm| Salt water Lens Glass f 5cm. The distance between the plane side of the lens and the mirror is L = 8 cm. How far D from the plane side of the lens should you place the bulb so that the rays reflected by the mirror come out into the salt water parallel to the optical axis? Note carefully: By virtue of the principle of reversibility, you can approach the problem of salt water towards the source S or the opposite while clearly indicating each of the steps of your calculation