During the daylight, you hold a ruler in a distance of 60 cm away from your eyes, and you find the size of the Moon to be 0.55 cm (try it yourself!). At night, you use a telescope to observe rock formations and craters on the Moon to estimate the diameter of the Moon to be about 3500 km.
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Given data:
Distance of ruler = 60 cm
Size of moon = 0.55 cm
Diameter of moon = 3500 Km
Solution:
Set a proportional relation between diameter of moon, distance of ruler and size of moon.
Distance of moon / Diameter = Distance of ruler / Size of image
Distance of moon / 3500 Km = 60 cm / 0.55 cm
Distance of moon = 381, 818 Km
The accuracy of the experiment results is limited by the precision results.
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