The convex lens of a magnifying glass is used to focus sunlight, as shown. Which of the lettered parts of the lens diagram repre
sents the focal point? Part A - the imaginary vertical line that divides the lens in half
Part B - the point at which the light converges on the other side of the lens
Part C - the distance between the optical center and where light converges
Part D - the point in the center of the lens