Home
Class 11
PHYSICS
Two point masses m and 2m are kept at po...

Two point masses `m` and `2m` are kept at points `A` and `B` as shown. `E` represents magnitude of gravitational field strength and `V` the gravitational potential. As we move from `A` to `B`

A

`E` will first decreases then increases

B

`E` will first increases then decreases

C

`V` will first decreases then increases

D

`V` will first increases then decrease

Text Solution

Verified by Experts

The correct Answer is:
A, D
`E` due to point mass is `E = (Gm)/(r^(2))`
As `r rarr 0,E rarr prop`
So, just over the point masses, `E = oo`. Hence, in moving from one point mass to other point mass, `E` first decreases and then increases.
`V` due to a point mass is
`V = - (Gm)/(r )`
As `r rarr 0, V rarr - oo`
So, just over the point mass, `V` is `- oo`. Hence, in moving from one point mass to other point mass, `V` first increase and then decrease .
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    DC PANDEY ENGLISH|Exercise Level 2 Subjective|14 Videos

  • GRAVITATION

    DC PANDEY ENGLISH|Exercise Check Point 10.1|20 Videos

  • GRAVITATION

    DC PANDEY ENGLISH|Exercise Level 2 Single Correct|22 Videos

  • GENERAL PHYSICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|2 Videos

  • KINEMATICS

    DC PANDEY ENGLISH|Exercise INTEGER_TYPE|10 Videos

Similar Questions

Explore conceptually related problems

Three point masses 'm' each are kept at three verties of a square pf side 'a' as shown in figure. Find gravitation potential and field strength at point O. .

Two bodies of masses M_(1) and M_(2) are kept separeated by a distance d. The potential at the point where the gravitational field produced by them is zero,the gravitational potential will be :-

Two particles of masses 'm' and '9m' are separated by a distance 'r'. At a point on the line joining them the gravitational field is zero. The gravitational potential at that point is (G = Universal constant of gravitation)

Assertion : Two spherical shells have masses m_(1) and m_(2) . Their radii are r_(1) and r_(2) . Let r be the distance of a point from centre. Then gravitational field strength and gravitational potential both are equal to zero for O lt r lt r_(1) Reason : In the region r_(1) lt r lt r_(2) , gravitational field strength due to m_(2) is zero. But gravitational potential due to m_(2) is constant (but non-zero).

Let V and E denote the gravitational potential and gravitational field at a point. It is possile to have

If gravitational potential is V = xy^(2) , find the gravitational field at (2,1)

Two bodies of masses m and M are placed at distance d apart. The gravitational potential (V) at the position where the gravitational field due to them is zero V is

Two points masses m each are kept at the two verticle of an equilateral triangle of side 'a' as shows in figure. Find gravitational potential and magnitude of field strength at O .

Two concentric speherical shells are as shown in figure. The magnitude of gravitational potential (V) and field strength (E ) vary with distance ( r) from centre as

Two point masses having mass m and 2m are placed at distance d . The point on the line joining point masses , where gravitational field intensity is zero will be at distance