12. If the distance between earth and the sun were half of its present value, the number of days in year would have been (1) 64.5 (2) 129 (3) 182.5 (4) 730 solution also
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Answer:
(3) 182.5
Explanation:
Radius of a circle is directly proportional to its circumference.
So, if radius (distance between earth and sun) is halved, then circumference of orbit will also be halved.
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