If the distance between the earth and the sun were half its present value, the number of days in a year would have been

Options

A. If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.
B. If both Assertion and Reason are true but Reason is not a correct explanation of the Asseration.
C. If Assertion is true but the Reason is false.
D. If both Assertion and Reason are false.

Answer

A

Explanation

Here, both Assertion and Reason are correct because
`T_(2) = T_(1) ((r_(1))/(r_(1)))^(3//2) = 365 ((r//2)/(r ))^(3//2) = (365)/(2 sqrt(2))`
`= 129 days`.