8. The flame of a lit candle is exactly 1.50 m from a nearby wall. You have a convex and aconcave lens. (a) Which of the two lenses should you use if you wish to create a real image of the candle on the nearby wall?[1 mark] (b) You find that by holding the correct lens at a distance of exactly 23.8 cm from the flame the image on the wall is in focus. Calculate the focal length of the lens. [2 marks] (c) Sketch a ray diagram (by hand) for the candle-lens-wall scenario. Be sure to clearly indicate the focal points, object, and image, and include at least three rays. [4 marks] (d) Using the same lens, you now head outside and try to focus the sun's light on a single point on the ground. At what distance from the ground should you hold the lens?[1 mark]