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Questions  

The sun’s angular diameter is measured to be 1920''. The distance D of the sun from the earth is 1.496×1011m, the diameter of the sun is

a
9.31×103m
b
1.39×109m
c
3.26×106m
d
8.32×104m

detailed solution

Correct option is B

Sun’s angular diameter α=1920''=1920×4.85×10−6  rad=9.31×10−3  radSun’s diameter, d=αD=(9.31×10−3)×(1.496×1011)1.39×109  m

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