A geostationary satellite is at a height $h$ above the surface of earth. If earth radius is $R$
The minimum colatitude on earth upto which the satellite can be used for communication is $\sin^{-1} (R/R+h).$
The maximum colatitudes on earth upto which the satellite can be used for communication is $\sin^{-1} (R/R+h).$
The area on earth escaped from this satellite is given as $2\pi R^2 (1 + \sin \theta )$
$(A)$ and $(C)$ both
The motion of planets in the solar system is an example of the conservation of
If the distance of the earth from Sun is $1.5 \times 10^6\,km$. Then the distance of an imaginary planet from Sun, if its period of revolution is $2.83$ years is $.............\times 10^6\,km$
A satellite moves in a circle around the earth. The radius of this circle is equal to one half of the radius of the moon’s orbit. The satellite completes one revolution in
If the earth suddenly shrinks to $\frac{1}{64}$ th of its original volume with its mass remaining the same, the period of rotation of earth becomes $\frac{24}{ x } h$. The value of $x$ is $.......$
The time period of a satellite of earth is $5\, hours$. If the separation between the centre of earth and the satellite is increased to $4\, times$ the previous value, the new time period will become ....... $h$