b. 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` xx 10^(6)` m , and the radius of lunar orbit is 3.8`xx10^(8)` m.

Explanation

b. diameter of moon.s image = D
`therefore (D)/(1500) = (3.48 xx 10^(6) xx 100)/(3.8 xx 10^(8) xx 100) " " therefore D = 13.7 `cm