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Hint: For calculating the highest period of revolution of plants first we have to remember the radius of the orbit in which plants revolves because the period of revolution depends on the radius of orbit of the planet
i.e.${T^2}\alpha \,{R^3}$
where $T = $ time period of revolution
and $R = $ radius of orbit
Step by step answer: We know that period of revolution depends on the radius of the orbit of the planet and the relation between them is given as
${T^2}\alpha \,{R^3}$
Where T is time period and
R is radius of orbit
From the above expression we can easily conclude that greater the radius, greater the period.
We know that the radius of orbit of any planet is fixed and Neptune is the farthest planet from the sum i.e. its radius of orbit is greater. So, the time period of revolution is also greater for Neptune compared to other 3 plants Uranus, mercury, and Venus.
Note: in many time they can ask for calculated data for period of revolution which is listed below
Mercury $ = \,88\,$days
Venus $ = \,225$days
Uranus $ = \,84$years
Neptune $ = \,165$ years
So, the decreasing order of period of revolution is :-
$neptune > uranus > venus > mercury$
i.e.${T^2}\alpha \,{R^3}$
where $T = $ time period of revolution
and $R = $ radius of orbit
Step by step answer: We know that period of revolution depends on the radius of the orbit of the planet and the relation between them is given as
${T^2}\alpha \,{R^3}$
Where T is time period and
R is radius of orbit
From the above expression we can easily conclude that greater the radius, greater the period.
We know that the radius of orbit of any planet is fixed and Neptune is the farthest planet from the sum i.e. its radius of orbit is greater. So, the time period of revolution is also greater for Neptune compared to other 3 plants Uranus, mercury, and Venus.
Note: in many time they can ask for calculated data for period of revolution which is listed below
Mercury $ = \,88\,$days
Venus $ = \,225$days
Uranus $ = \,84$years
Neptune $ = \,165$ years
So, the decreasing order of period of revolution is :-
$neptune > uranus > venus > mercury$
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