Question

(a) The earth-moon distance is about 60 earth radius. What will be the diameter of the earth (approximately in
degrees) as seen from the moon?
(b) Moon is seen to be of (1⁄2)°diameter from the earth. What must be the relative size compared to the earth?
(c) From parallax measurement, the sun is found to be at a distance of about 400 times the earth-moon
distance. Estimate the ratio of sun-earth diameters.

Answer 1

Answer:

Hence, diameter of earth is 4 times the diameter of moon. (Here r stands for distance, and D for diameter.)

Explanation:

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