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Q 9.14 (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 , and the radius of the lunar orbit is
.
Answers (1)
Given,
The radius of the lunar orbit,r = .
The diameter of the moon,d =
focal length
let be the diameter of the image of the moon which is formed by the objective lens.
Now,
the angle subtended by diameter of the moon will be equal to the angle subtended by the image,
Hence the required diameter is 13.74cm.
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