A) you have a thin converging lens whose focal length is 0.5 m and a sheet of white paper on which to display a real image of a small tree that is 4 m tall and 49 m away. how far in back of the lens should you place the paper in order to get a sharp image of the tree? how tall is the image of the tree? b) a spotlight mounted beside a swimming pool sends a beam of light at an angle into the pool. the light hits the water a distance x = 2.8 m from the edge of the pool. the pool is d = 2 m deep and the light is mounted h = 1.2 m above the surface of the water. how far from the edge of the pool is the spot of light on the bottom of the pool? (the diagram is not drawn to scale.) indices of refraction: water: 1.33; air: 1.00029angle of the beam from the normal in the airangle of the beam from the normal in the waterdistance of spot from edge of pool