wo electrons in an atom are moving in orbits of radii R and 9R respectively.The ratio of their frequencies will be

In two H atoms A and B the electrons move around the nucleus in circular orbits of radius r and 4r respectively. The ratio of the times taken by them to complete one revolution is

Satellites A and B are orbiting around the earth in orbits of ratio R and 4R respectively. The ratio of their areal velocities is-

Two satellite fo masses m and 4m orbit the earth in circular orbits of radii 4r and r respectively. The ratio of their orbital speed is

Two satellites of masses 3 m and m orbit the earth in circular orbits of radii r and 3 r respectively. The ratio of the their speeds is

Statement-1 : Two satellites of mass 3 M and M orbit the earth in circular orbits of radii r and 3r respectively. The ratio of their speeds is sqrt(3) : 1 . Statement-2 : Orbital velocity of satellite is upsilon = sqrt((GM)/(r ))

Two satellites X and Y are moving in circular orbits of radii R and 2R respectively, around the same planet. What is the ratio of their critical velocities ?

An electric field due to a positively charged long straight wire at a distance r from it is proportional to r_(-1) in magnitude. Two electrons are orbiting such a long straight wire in circular orbits of radii 1 Å and 2 Å . The ratio of their respective time periods is

In two individual hydrogen atoms electrons move around the nucleus in circular orbits of radii R and 4R. The ratio of the time taken by them to complete one revolution is:

Two satellites of masses 80 kg and 120 kg revolve round a planet in circular orbits of radii 16 R and 9 R respectively, where R is radius of the planet. The ratio of the speeds of satellites will be

Two satellites P and Q go round a planet in circular orbits of radii 9R and R respectively. If the speed of the satellite P is 4V, then speed of satellite Q will be