# If this Telescope is Used to View the Moon, What is the Diameter of the Image of the Moon Formed by the Objective Lens ? - Physics

If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens ? the diameter of the moon is 3.48 × 106 m and the radius of lunar orbit is 3.8 × 108m.

#### Solution

Diameter of the image of the moon formed by the objective lens, d = α f0

=>d=

=>d=(3.48xx10^6)/(3.8xx10^8)xx15

d=0.135 m = 13.5 cm

Concept: Optical Instruments - The Microscope
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