NEET Gravitation PYQ practice sheet

12 previous-year NEET Physics questions from Gravitation, newest papers first. Gravitation carries 14 of the Physics questions in NEET 2020 to 2026, so this is a good place to test yourself after revising the chapter. Marking: +4 correct, −1 wrong.

1. 1.

   RE-NEET 2026

   Two planets $P_1$ and $P_2$ with equal mass have radii $R_1$ and $R_2$, respectively, where $R_2 = \frac{R_1}{2}$. The escape speeds of $P_1$ and $P_2$ are $v_1$ and $v_2$, respectively. Then $\frac{v_2}{v_1}$ is:

   • (A)
     $\sqrt{2}$
   • (B)
     $\frac{1}{\sqrt{2}}$
   • (C)
     $1$
   • (D)
     $2$
2. 2.

   RE-NEET 2026

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

   • (A)
     $R^{3/2}$
   • (B)
     $R^{3}$
   • (C)
     $R^{1/2}$
   • (D)
     $R^{2}$
3. 3.

   NEET 2026

   The amount of work done to raise a mass '$m$' from the surface of the Earth to a height equal to the radius of the Earth '$R$' will be

   • (A)
     $mg\dfrac{R}{4}$
   • (B)
     $2mgR$
   • (C)
     $mgR$
   • (D)
     $mg\dfrac{R}{2}$
4. 4.

   NEET 2024

   The mass of a planet is $\dfrac{1}{10}$th that of the earth and its diameter is half that of the earth. The acceleration due to gravity on that planet is:

   • (A)
     $4.9\ \text{m s}^{-2}$
   • (B)
     $19.6\ \text{m s}^{-2}$
   • (C)
     $3.92\ \text{m s}^{-2}$
   • (D)
     $9.8\ \text{m s}^{-2}$
5. 5.

   NEET 2024

   The minimum energy required to launch a satellite of mass $m$ from the surface of earth of mass $M$ and radius $R$ in a circular orbit at an altitude of $2R$ from the surface of the earth is:

   • (A)
     $\dfrac{GmM}{3R}$
   • (B)
     $\dfrac{5GmM}{6R}$
   • (C)
     $\dfrac{GmM}{2R}$
   • (D)
     $\dfrac{2GmM}{3R}$
6. 6.

   NEET 2023

   Two bodies of mass $m$ and $9m$ are placed at a distance $R$. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be ($G$ = gravitational constant) :

   • (A)
     $-\dfrac{20\,Gm}{R}$
   • (B)
     $-\dfrac{8\,Gm}{R}$
   • (C)
     $-\dfrac{12\,Gm}{R}$
   • (D)
     $-\dfrac{16\,Gm}{R}$
7. 7.

   NEET 2023

   A satellite is orbiting just above the surface of the earth with period $T$. If $d$ is the density of the earth and $G$ is the universal constant of gravitation, the quantity $\dfrac{3\pi}{Gd}$ represents :

   • (A)
     $\sqrt T$
   • (B)
     $T$
   • (C)
     $T^2$
   • (D)
     $T^3$
8. 8.

   NEET 2022

   A body of mass 60 g experiences a gravitational force of 3.0 N, when placed at a particular point. The magnitude of the gravitational field intensity at that point is:

   • (A)
     180 N/kg
   • (B)
     0.05 N/kg
   • (C)
     50 N/kg
   • (D)
     20 N/kg
9. 9.

   NEET 2022

   Match List - I with List - II: List - I (a) Gravitational constant (G) (b) Gravitational potential energy (c) Gravitational potential (d) Gravitational intensity List - II (i) $[L^2T^{-2}]$ (ii) $[M^{-1}L^3T^{-2}]$ (iii) $[LT^{-2}]$ (iv) $[ML^2T^{-2}]$ Choose the correct answer from the options given below:

   • (A)
     (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)
   • (B)
     (a)-(ii), (b)-(i), (c)-(iv), (d)-(iii)
   • (C)
     (a)-(ii), (b)-(iv), (c)-(i), (d)-(iii)
   • (D)
     (a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)
10. 10.

    NEET 2021

    The escape velocity from the Earth's surface is $v$. The escape velocity from the surface of another planet having a radius, four times that of Earth and same mass density is :

    • (A)
      $3v$
    • (B)
      $v$
    • (C)
      $4v$
    • (D)
      $2v$
11. 11.

    NEET 2021

    A particle of mass $m$ is projected with a velocity $v = kV_e\ (k<1)$ from the surface of the earth. ($V_e$ = escape velocity) The maximum height above the surface reached by the particle is :

    • (A)
      $\dfrac{R^{2}k}{1+k}$
    • (B)
      $R\left(\dfrac{k}{1+k}\right)^{2}$
    • (C)
      $R\left(\dfrac{k}{1-k}\right)^{2}$
    • (D)
      $\dfrac{Rk^{2}}{1-k^{2}}$
12. 12.

    NEET 2020

    A body weighs $72$ N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?

    • (A)
      48 N
    • (B)
      32 N
    • (C)
      30 N
    • (D)
      24 N