138640 A planet of mass ' $m$ ' moves in an elliptical orbit around an unknown star of mass ' $M$ ' such that its maximum and minimum distances from the star are equal to $r_{1}$ and $r_{2}$ respectively. The angular momentum of the planet relative to the centre of the star is

138641 A light planet is revolving around a massive star with a period of revolution $T$. If the gravitational force of attraction varies as $\mathbf{r}^{-5 / 2}$, then $T^{2}$ is proportional to ( $r$ is the distance between the planet and star)

138642 Two planets $A$ and $B$ of equal mass are having their period of revolutions $T_{A}$ and $T_{B}$ such that $T_{A}=2 T_{B}$. These planets are revolving in the circular orbits of radii $r_{A}$ and $r_{B}$ respectively. Which out of the following would be the correct relationship of their orbits ?

138643 The distance of the Sun from Earth is $1.5 \times 10^{11}$ $m$ and its angular diameter is (2000) $s$ when observed from the Earth. The diameter of the Sun will be :

138640 A planet of mass ' $m$ ' moves in an elliptical orbit around an unknown star of mass ' $M$ ' such that its maximum and minimum distances from the star are equal to $r_{1}$ and $r_{2}$ respectively. The angular momentum of the planet relative to the centre of the star is

138641 A light planet is revolving around a massive star with a period of revolution $T$. If the gravitational force of attraction varies as $\mathbf{r}^{-5 / 2}$, then $T^{2}$ is proportional to ( $r$ is the distance between the planet and star)

138642 Two planets $A$ and $B$ of equal mass are having their period of revolutions $T_{A}$ and $T_{B}$ such that $T_{A}=2 T_{B}$. These planets are revolving in the circular orbits of radii $r_{A}$ and $r_{B}$ respectively. Which out of the following would be the correct relationship of their orbits ?

138643 The distance of the Sun from Earth is $1.5 \times 10^{11}$ $m$ and its angular diameter is (2000) $s$ when observed from the Earth. The diameter of the Sun will be :

138640 A planet of mass ' $m$ ' moves in an elliptical orbit around an unknown star of mass ' $M$ ' such that its maximum and minimum distances from the star are equal to $r_{1}$ and $r_{2}$ respectively. The angular momentum of the planet relative to the centre of the star is

138641 A light planet is revolving around a massive star with a period of revolution $T$. If the gravitational force of attraction varies as $\mathbf{r}^{-5 / 2}$, then $T^{2}$ is proportional to ( $r$ is the distance between the planet and star)

138642 Two planets $A$ and $B$ of equal mass are having their period of revolutions $T_{A}$ and $T_{B}$ such that $T_{A}=2 T_{B}$. These planets are revolving in the circular orbits of radii $r_{A}$ and $r_{B}$ respectively. Which out of the following would be the correct relationship of their orbits ?

138643 The distance of the Sun from Earth is $1.5 \times 10^{11}$ $m$ and its angular diameter is (2000) $s$ when observed from the Earth. The diameter of the Sun will be :

138640 A planet of mass ' $m$ ' moves in an elliptical orbit around an unknown star of mass ' $M$ ' such that its maximum and minimum distances from the star are equal to $r_{1}$ and $r_{2}$ respectively. The angular momentum of the planet relative to the centre of the star is

138641 A light planet is revolving around a massive star with a period of revolution $T$. If the gravitational force of attraction varies as $\mathbf{r}^{-5 / 2}$, then $T^{2}$ is proportional to ( $r$ is the distance between the planet and star)

138642 Two planets $A$ and $B$ of equal mass are having their period of revolutions $T_{A}$ and $T_{B}$ such that $T_{A}=2 T_{B}$. These planets are revolving in the circular orbits of radii $r_{A}$ and $r_{B}$ respectively. Which out of the following would be the correct relationship of their orbits ?

138643 The distance of the Sun from Earth is $1.5 \times 10^{11}$ $m$ and its angular diameter is (2000) $s$ when observed from the Earth. The diameter of the Sun will be :