Two planets move around the sun. The periodic times and the mean radii of the orbits are `T_(1), T_(2)` and `r_(1) r_(2)` respectively. The ratio `T_(1)//T_(2)` is equal to

Two planet are revolving around the sun. their time periods of revolution and the average radii of the orbits are respectively (T_1,T_2) and (r_1,r_2) . The ratio T_1//T_2 is

A and B are two satellite revolving around the earth in circular orbits with radii R_(A) and R_(B) . Their periods T_(A) and T_(B) are 8 h and 1 h respectively. Then the ratio of (R_(A)//R_(B)) is equal to

Two spherical black bodies of radii R_(1) and R_(2) and with surface temperature T_(1) and T_(2) respectively radiate the same power. R_(1)//R_(2) must be equal to

Two spherical black bodies of radii R_(1) and R_(2) and with surface temperature T_(1) and T_(2) respectively radiate the same power. R_(1)//R_(2) must be equal to

Two spherical black bodies of radii R_(1) and R_(2) and with surface temperature T_(1) and T_(2) respectively radiate the same power. R_(1)//R_(2) must be equal to

Two spherical black bodies of radii r_(1) and r_(2) and with surface temperatures T_(1) and T_(2) respectively, radiate the same power. Then r_(1)//r_(2) must be equal to

A planet of mass M, has two natural satellites with masses m1 and m2. The radii of their circular orbits are R_(1) and R_(2) respectively. Ignore the gravitational force between the satellites. Define v_(1), L_(1), K_(1) and T_(1) to be, respectively, the orbital speed, angular momentum, kinetic energy and time period of revolution of satellite 1 , and v_(2), L_(2), K_(2) and T_(2) to be he corresponding quantities of satellite 2. Given m_(1)//m_(2) = 2 and R_(1)//R_(2) = 1//4 , match the ratios in List-I to the numbers in List-II.

A planet of mass M, has two natural satellites with masses m1 and m2. The radii of their circular orbits are R_(1) and R_(2) respectively. Ignore the gravitational force between the satellites. Define v_(1), L_(1), K_(1) and T_(1) to be, respectively, the orbital speed, angular momentum, kinetic energy and time period of revolution of satellite 1 , and v_(2), L_(2), K_(2) and T_(2) to be he corresponding quantities of satellite 2. Given m_(1)//m_(2) = 2 and R_(1)//R_(2) = 1//4 , match the ratios in List-I to the numbers in List-II.