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Question: Two planets at mean distance \(d _ { 1 }\) and \(d _ { 2 }\) from the sun and their frequencies are ...

Two planets at mean distance d1d _ { 1 } and d2d _ { 2 } from the sun and their frequencies are n1 and n2 respectively then

A

n12d12=n2d22n _ { 1 } ^ { 2 } d _ { 1 } ^ { 2 } = n _ { 2 } d _ { 2 } ^ { 2 }

B

n22d23=n12d13n _ { 2 } ^ { 2 } d _ { 2 } ^ { 3 } = n _ { 1 } ^ { 2 } d _ { 1 } ^ { 3 }

C

n1d12=n2d22n _ { 1 } d _ { 1 } ^ { 2 } = n _ { 2 } d _ { 2 } ^ { 2 }

D

n12d1=n22d2n _ { 1 } ^ { 2 } d _ { 1 } = n _ { 2 } ^ { 2 } d _ { 2 }

Answer

n22d23=n12d13n _ { 2 } ^ { 2 } d _ { 2 } ^ { 3 } = n _ { 1 } ^ { 2 } d _ { 1 } ^ { 3 }

Explanation

Solution

T2R3=T2d3=1n2d3=\frac { T ^ { 2 } } { R ^ { 3 } } = \frac { T ^ { 2 } } { d ^ { 3 } } = \frac { 1 } { n ^ { 2 } d ^ { 3 } } =constant

n12d13=n22d23\therefore n _ { 1 } ^ { 2 } d _ { 1 } ^ { 3 } = n _ { 2 } ^ { 2 } d _ { 2 } ^ { 3 } [where n = frequency]