If the distance between the earth and the sun were half of the present distance, then the duration of a year would have been nearly

Question

If the distance between the earth and the sun were half of the present distance, then the duration of a year would have been nearly, 45 d a y s, 100 d a y s, 182 d a y s, 129 d a y s

MARKS App · Accepted Answer

According to the Kepler's law T 1 T 2 2 = r 1 r 2 3 ∴ T 2 T 1 = r 2 r 1 3 / 2 ∴ T 2 = T 1 r 2 r 1 3 / 2 = 3 6 5 1 2 3 / 2 = 129 days

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