Two planets at mean distance `d_(1)` and `d_(2)` from the sun and their frequencies are n and n respectively then

The period T and mean distance R of a planet from the sun are related by

The mean distance of two planets A and B from the sun is 2 and 4 times the distance of the Earth from the sun, respectively. Find the ratio of the time taken by the two planets to make one revolution around the sun.

A planet is at an average distance d from the sun, and its average surface temperature is T. Assume that the planet receives energy only from the sun, and loses energy only through radiation from its surface. Neglect atmospheric effects. If T prop d^(-n) , the value of n is

A planet is at an average distance d from the sun and its average surface temeperature is T. Assume that the planet receives energy only from the sun and loses energy only through radiation from the surface. Neglect atmospheric effects. If Tpropd^(-n) , the value of n is

A planet is at an average distance d from the sun and its average surface temeperature is T. Assume that the planet receives energy only from the sun and loses energy only through radiation from the surface. Neglect atmospheric effects. If Tpropd^(-n) , the value of n is

A planet moves aruond the sun in an elliptical orbit such that its kinetic energy is K_(1) and K_(2) when it is nearest to the sun and farthest from the sun respectively. The smallest distance and the largest distance between the planet and the sun are r_(1) and r_(2) respectively.