Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Gravitation question

2023 · Q157
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Gravitation
  5. /2023 · Q157

Gravitation question

2023 · Q157

NEETPhysicsGravitationMCQ+4 / −1

Two bodies of mass mmm and 9m9 m9m are placed at a distance RRR. The gravitational potential on the line joining the bodies where the gravitational field equals zero, will be (G=G=G= gravitational constant) :

  1. A
    −12GmR-\frac{12 G m}{R}−R12Gm​
  2. B
    −16GmR-\frac{16 G m}{R}−R16Gm​
  3. C
    −20GmR-\frac{20 G m}{R}−R20Gm​
  4. D
    −8GmR-\frac{8 G m}{R}−R8Gm​
View written solutionFree

Correct answer: B

NEET 2023 Physics - Gravitation Question 10 English Explanation

Position of Neutral point (Zero Gravitational Field)

$$r_{1}=\frac{\sqrt{m_{1}} R}{\sqrt{m_{1}}+\sqrt{m_{2}}}=\frac{\sqrt{m} R}{\sqrt{m}+\sqrt{9 m}}=\frac{R}{4}$$

$$\mathrm{r}_{2}=\mathrm{R}-\mathrm{R} / 4=3 \mathrm{R} / 4$$

Now Gravitational potential at point $\mathrm{P}$

$$ \begin{aligned} \& V_{P}=-\frac{G M}{R / 4}-\frac{9(\mathrm{GM})}{3 \mathrm{R} / 4} \\ \& =\frac{-16 \mathrm{GM}}{\mathrm{R}} \end{aligned} $$

PreviousNext

More from Gravitation

  • 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 Gd3π​ represents :2023 · MCQ
  • A gravitational field is present in a region and a mass is shifted from A to B through different paths as shown. If W1, W2 and W3 represent the work done by the gravitational force along the respective paths, then : Includes diagram2022 · MCQ
  • In a gravitational field, the gravitational potential is given by, V=−xK​ (J/Kg). The gravitational field intensity at point (2, 0, 3) m is2022 · MCQ
  • 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 is2022 · MCQ
  • Match List - I with List - II Choose the correct answer from the options given below Includes table2022 · MCQ
  • 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 :2021 · MCQ
  • A particle of mass 'm' is projected with a velocity υ = kVe = (k < 1) from the surface of the earth. (Ve = escape velocity) The maximum height above the surface reached by the particle is :2021 · MCQ
  • 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?2020 · MCQ