List of top Physics Questions on Keplers Laws

A satellite \(A\) of mass \(m\) is orbiting around the Earth in a stable circular orbit of radius \(r\) and another satellite \(B\) of mass \(2m\) is orbiting in a similar orbit of radius \(2r\). What is the ratio of the time periods of revolution of satellites \(A\) and \(B\)?

The figure shows the revolution of the planet (P) around the sun (S) in an elliptical orbit. Which of the following statements is true regarding time taken?

A planet revolves around the Sun in an elliptical orbit. The areal velocity of the planet is \(4 \times 10^{16}\,\text{m}^2\text{s}^{-1}\). If the maximum distance between the planet and the Sun is \(4 \times 10^{12}\,\text{m}\), then the minimum speed of the planet is:

A planet revolves around the sun in an elliptical orbit. The areal velocity is 4 10^16 m^2s^-1. Maximum distance is 4 10^12 m. Find minimum speed.

If the ratio of the distances of a planet from the sun at perihelion and aphelion is 2: 3, then the ratio of their respective velocities at the perihelion and aphelion is

The maximum and minimum distances of a satellite revolving in an elliptical orbit are in the ratio $3:1$. If the speed of the satellite at the nearest distance is $v$, then the speed at the farthest distance is

What is the ratio of escape velocity to orbital velocity?

The semi-major axis of the orbit of Saturn is approximately nine times that of Earth. The time period of revolution of Saturn is approximately equal to

The maximum and minimum distances of a planet from sun are $r_1$ and $r_2$ respectively. If minimum velocity is $V_1$ and minimum velocity is $V_2$, then the ration $V_1 : V_2$ is:

If T is the time period of satellite in an orbit of radius r, then the time period in an orbit of radius 3r is:

A satellite is orbiting the Earth and dissipates energy due to some resistive forces. Its initial total mechanical energy is \(E\) (negative). If the radius of its orbit becomes half of the original value, what is the new total mechanical energy of the satellite?

The orbital velocity $v_o$ of a satellite at height R from the surface in terms of escape velocity $v_e$ from the earth is:

Two satellites A and B are orbiting the earth at heights of 2.5R and 7.5R from the centre. The ratio of their time periods is:

The period of revolution of the planet A around the sun is 27 times that of another planet B. If the distance of A from the sun is \( X \) times greater than that of B from the sun, then the value of \( X \) is

The line that joins any planet to the sun sweeps out equal areas in equal intervals of time. This statement is

If the distance between the Sun and Earth is doubled, then the duration of the year on Earth will be:
[Given actual duration of the year = \(T\)]

If a satellite of mass M is spinning about its own axis and revolves around the earth in a circular orbit, then it does not have

The period of revolution of planet A around the sun is 8 times that of \( B \). The distance of \( A \) from the sun is how many times greater than that of \( B \) from the sun?

Applying the principle of homogeneity of dimensions, determine which one is correct. Where \( T \) is the time period, \( G \) is the gravitational constant, \( M \) is the mass, and \( r \) is the radius of the orbit.

Correct formula for height of a satellite from earths surface is :

If the distance of the Earth from the Sun is \( 1.5 \times 10^6 \, \text{km} \), then the distance of an imaginary planet from the Sun, if its period of revolution is \( 2.83 \, \text{years} \), is:

Every planet revolves around the sun in an elliptical orbit:-
A. The force acting on a planet is inversely proportional to square of distance from sun
B. Force acting on planet is inversely proportional to product of the masses of the planet and the sun
C. The Centripetal force acting on the planet is directed away from the sun
D. The square of time period of revolution of planet around sun is directly proportional to cube of semi-major axis of elliptical orbit
Choose the correct answer from the options given below:

The time period of a satellite of earth is 24 hours. If the separation between the earth and the satellite is decreased to one fourth of the previous value, then its new time period will become.

The time period of a satellite of earth is $5\text{ hours}$. If the separation between the earth and the satellite is increased to four times the previous value, the new time period of the satellite will be