Use any data of your choice and the lens/mirror equation to calculate the focal lengths for both the convex lens and the concave mirror.
Convex lens
f =10cm
Concave Mirror
f = 15 cm
What range of do values will result in a real image? Infer this information for both the lens and mirror based on the data collected. Report these ranges in terms of f and/or 2f. For example, "When do.is less than 2f.