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Q.

The distance of the Sun from earth is 1.5×1011 m and its angular diameter is (2000) sec when observed from the earth. The diameter of the Sun will be :

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a

1.45×109 m

b

0.14×109 m

c

1.45×1010 m

d

2.45×1010 m

answer is C.

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Detailed Solution

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θ=dr ⇒200060×60×π180=d1.5×1011 ⇒d=200060×60×π180×1.5×1011 ⇒d=π×1.53×6×18×1011=1.45×109m

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