JEE Main 2024 Physics question
Match List-I with List-II. (Where a = radius of planet orbit, r = radius of planet, M = mass of Sun, m = mass of planet) List-I: (A) Kinetic energy of planet (B) Gravitation Potential energy of Sun-planet system. (C) Total mechanical energy of planet (D) Escape energy at the surface of planet for unit mass object List-II: (I) (II) (III) (IV) Choose the correct answer from the options given below:
Answer: (A)
Solution
KE = GMm/2a, U = −GMm/a, E = −GMm/2a, and the escape energy per unit mass at the planet's surface is Gm/r.