2.32 It is a well known fact that during a total solar eclipse the disk of the moon almost completely covers the disk of the Sun. From this fact and from the information you can gather from examples 2.3 and 2.4, determine the approximate diameter of the moon.

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    Vishal Baghel | Contributor-Level 10

    2 months ago

    2.32

    Distance of the moon from Earth = 3.84 * 108 m

    Distance of the Sun from Earth = 1.496 * 1011 m

    Sun's diameter = 1.39 * 109 m

    Sun's angular diameter = 1920° = 1920 * 4.85 * 10-6 rad = 9.3 * 10-3 rad

    During total Solar eclipse, the moon completely covers the Sun, then the angular diameter of both Sun and the

    Moon will be equal

    So the angular diameter of moonΘ = 9.3 * 10-3 rad, distance d of moon from Earth = 3.84 * 108 m and

    diameter of the moon = angular diameter * distance

    So the approximate diameter of the Moon = 9.3 * 10-3 * 3.84 * 108 m = 35.712 * 105 m

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