RE-NEET Physics Gravitation Class 11 Questions

Two planets P₁ and P₂ with equal mass have radii R₁ and R₂, respectively, where R₂ = \( \frac{R₁}{2} \). The escape speeds of P₁ and P₂ are v₁ and v₂, respectively. Then \( \frac{v₂}{v₁} \) is:

In a solar system, the time-period of revolution of a planet tracing a circular orbit of radius R is proportional to:

The escape velocity for earth is \( v \). A planet having 9 times mass that of earth and radius, 16 times that of earth, has the escape velocity of:

An object of mass 100 kg falls from point A to B as shown in figure. The change in its weight, corrected to the nearest integer is (Rₑ is the radius of the earth):