Which of the following quantities does not depend upon the orbital radius of the satellite.
$\frac{T}{R}$
$\frac{T^2}{R^2}$
$\frac{T^2}{R}$
$\frac{T^2}{R^3}$
Planetary system in the solar system describes
The mean radius of the earth's orbit round the sun is $1.5 \times 10^{11}.$ The mean radius of the orbit of mercury round the sun is $6 \times10^{10}\,m.$ The mercury will rotate around the sun in
If the distance between the earth and the sun becomes half its present value, the number of days in a year would have been
The earth moves around the Sun in an elliptical orbit as shown in figure.The ratio $OA/OB = x$ . The ratio of the speed of the earth at $B$ to that at $A$ is nearly
Describe the method for drawing an ellipse and explain foci of ellipse, midpoint, semi major axis.