A 6.51 mm high firefly sits on the axis of, and 12.3 cm in front of, the thin lens A, whose focal length is 5.51 cm. Behind lens A there is another thin lens, lens B, with a focal length of 20.3 cm. The two lenses share a common axis and are 59.7 cm apart. Is the image of the firefly that lens B forms real or virtual? virtual real How far from lens B is this image located? Express the answer as a positive number. 9.98 image distance from lens B: cm Incorrect What is the height of this image? Express the answer as a positive number. 34.29 image height: mm Incorrect Is this image upright or inverted with respect to the firefly? upright inverted

A 6.51 mm high firefly sits on the axis of, and 12.3 cm in front of, the thin lens A, whose focal length is 5.51 cm. Behind lens A there is another thin lens, lens B, with a focal length of 20.3 cm. The two lenses share a common axis and are 59.7 cm apart. Is the image of the firefly that lens B forms real or virtual? virtual real How far from lens B is this image located? Express the answer as a positive number. 9.98 image distance from lens B: cm Incorrect What is the height of this image? Express the answer as a positive number. 34.29 image height: mm Incorrect Is this image upright or inverted with respect to the firefly? upright inverted