The period of revolution of a planet around the sun is 8 times that of the earth. If the mean distance of that planet from the sun is r, then mean dis

Question

The period of revolution of a planet around the sun is 8 times that of the earth. If the mean distance of that planet from the sun is r, then mean dis

The period of revolution of a planet around the sun is 8 times that of the earth. If the mean distance of that planet from the sun is r, then mean distance of earth from the sun is
A. `r//2`
B. `2r`
C. `r//4`
D. `4r`

Monjur Alahi

8 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - c
`t_(2)=8, r_(2)=r, r_(1)?`
`(T_(2))/(T_(1))=((r_(2))/(r_(1)))^(3//2)`
`(8)^(2//3)=(r_(2))/(r_(1))`
`4=(r_(2))/(r_(1))" "therefore" "r_(1)=(r)/(4).`

8 views Answered 2023-02-05 15:29