A telescope objective of focal length 1.0 m forms a real image of the moon 0.92 cm in diameter. Calculate the diameter of the moon, taking its mean distance from the moon to be 38 × 104 km. if the telescope uses an eyepiece of focal length 5.0 cm, what would be the distance between the two lenses for (a) the final image to be formed at infinity, (b) the final image (virtual) at 25 cm from the eye?
