The moon is observed from 2 diametrically extremes A andB on earth. The angle of parallax is found to be 1°54'.if the diameter of earth is about 1.276×10^7m estimate the distance of the moon from the earth
Asked by Sanmit Ratnaparkhi | 20th Apr, 2015, 08:35: PM
Given that the parallax angle, θ = 1° 54' = 114'
114' = 114× 60'' = 6840''
We know that 1'' = 4.85 × 10-6 rad
Therefore 1° 54' = 6840'' × (4.85 × 10-6 ) rad
θ = 3.32×10-2 rad
Given the diameter of earth, b = 1.276 × 107 m
Hence the distance of the moon from the earth = 3.843 × 108 m
Answered by Jyothi Nair | 21st Apr, 2015, 09:54: AM
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