Physics · 2025
JEE Main · 28 January 2025, Shift 2 · Q29
Earth has mass 8 times and radius 2 times that of a planet. If the escape velocity from the earth is 11.2 km/s, the escape velocity in km/s from the…
Earth has mass $\displaystyle 8$ times and radius $\displaystyle 2$ times that of a planet. If the escape velocity from the earth is $\displaystyle 11.2$ km/s, the escape velocity in km/s from the planet will be :
Official answer
From NTA’s final answer key for this paper.
(1)
$\displaystyle 5.6$
More from Gravitation
- Given below are two statements: Statement I: A satellite is moving around earth in the orbit very close to the earth surface. The time period of…2026
- If a body of mass 1 kg falls on the earth from infinity, it attains velocity (v) and kinetic energy (k) on reaching the surface of earth. The values…2026
- A small point of mass m is placed at a distance 2 R from the centre ' O ' of a big uniform solid sphere of mass M and radius R. The gravitational…2025
- Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: The kinetic energy needed to…2025
- Acceleration due to gravity on the surface of earth is 'g'. If the diameter of earth is reduced to one third of its original value and mass remains…2025
- A body of mass m is taken from the surface of earth to a height equal to twice the radius of earth (R_e). The increase in potential energy will be…2026
- An object is kept at rest at a distance of 3R above the earth's surface where R is earth's radius. The minimum speed with which it must be projected…2025
- The escape velocity from a spherical planet A is 10 km / s. The escape velocity from another planet B whose density and radius are 10 % of those of…2026
JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.