Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Gravitation question

2023 · 30 Jan · Shift 1 · Q54
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Physics
  4. /Gravitation
  5. /2023 · 30 Jan · Shift 1 · Q54

Gravitation question

2023 · 30 Jan · Shift 1 · Q54

JEE MainPhysicsGravitationMCQ+4 / −1
If the gravitational field in the space is given as (−Kr2)\left(-\frac{K}{r^{2}}\right)(−r2K​). Taking the reference point to be at r=2 cm\mathrm{r}=2 \mathrm{~cm}r=2 cm with gravitational potential V=10 J/kg\mathrm{V}=10 \mathrm{~J} / \mathrm{kg}V=10 J/kg. Find the gravitational potential at r=3 cm\mathrm{r}=3 \mathrm{~cm}r=3 cm in SI unit (Given, that K=6 Jcm/kg\mathrm{K}=6 \mathrm{~Jcm} / \mathrm{kg}K=6 Jcm/kg)
  1. A
    9
  2. B
    11
  3. C
    10
  4. D
    12
PreviousNext

More from Gravitation

  • An object is allowed to fall from a height R above the earth, where R is the radius of earth. Its velocity when it strikes the earth's surface, ignoring air resistance, will be2023 · MCQ
  • At a certain depth "d " below surface of earth, value of acceleration due to gravity becomes four times that of its value at a height 3R above earth surface. Where R is Radius of earth (Take R=6400 km…2023 · MCQ
  • A body weight W, is projected vertically upwards from earth's surface to reach a height above the earth which is equal to nine times the radius of earth. The weight of the body at that height will be :2023 · MCQ
  • The approximate height from the surface of earth at which the weight of the body becomes 31​ of its weight on the surface of earth is : [Radius of earth R = 6400 km and 3​ = 1.732]2022 · MCQ
  • The distance between Sun and Earth is R. The duration of year if the distance between Sun and Earth becomes 3R will be :2022 · MCQ
  • Three identical particles A,B and C of mass 100 kg each are placed in a straight line with AB=BC=13 m. The gravitational force on a fourth particle P of…2022 · MCQ
  • The length of a seconds pendulum at a height h = 2R from earth surface will be: (Given R = Radius of earth and acceleration due to gravity at the surface of earth, g = π 2 ms − 2)2022 · MCQ
  • An object is taken to a height above the surface of earth at a distance 45​ R from the centre of the earth. Where radius of earth, R = 6400 km. The percentage decrease in the weight of the object will be :2022 · MCQ