Question

If the earth is one fourth of its present distance from the sun the duration of the year will be

Answer 1

BY Keplers's IIIrd law

Time period T²=kR³

where R is distance of the earth from sun

so if R'=R/4

T'²=KR'³

T'²=KR³/64

T'²=T²/64

T'=T/8

so the answer is c)

Answer 2

Answer:

Explanation:

BY Keplers's IIIrd law

Time period T²=kR³

where R is distance of the earth from sun

so if R'=R/4

T'²=KR'³

T'²=KR³/64

T'²=T²/64

T'=T/8

so the answer is c)