JEE MAIN - Physics (2023 - 6th April Evening Shift - No. 19)
Choose the incorrect statement from the following:
The linear speed of a planet revolving around the sun remains constant.
When a body falls towards earth, the displacement of earth towards the body is negligible.
The speed of satellite in a given circular orbit remains constant.
For a planet revolving around the sun in an elliptical orbit, the total energy of the planet remains constant.
Explanation
The linear speed of a planet revolving around the sun does not remain constant, as planets follow an elliptical orbit around the sun. According to Kepler's second law, the areal velocity of a planet remains constant, which means that the planet moves faster when it is closer to the sun (at perihelion) and slower when it is farther away (at aphelion).
Comments (0)
