Inside a uniform spherical shell :
(a) the gravitational field is zero
(b) the gravitational potential is zero
(c) the gravitational field is same everywhere
(d) the gravitation potential is same everywhere
(e) all the above
Choose the most appropriate answer from the options given below :
(a) the gravitational field is zero
(b) the gravitational potential is zero
(c) the gravitational field is same everywhere
(d) the gravitation potential is same everywhere
(e) all the above
Choose the most appropriate answer from the options given below :
- (A)(e) only
- (B)(a), (c) and (d) only✓ Correct
- (C)(b), (c) and (d) only
- (D)(a), (b) and (c) only
Answer: (B)
Solution
The mass enclosed by any sphere drawn inside a uniform shell is zero, so Gauss's law for gravitation makes the field vanish at every interior point; it is thus zero, and being zero everywhere it is also the same everywhere. Since is zero throughout the cavity, the potential cannot vary inside and keeps its surface value
which is constant but negative. The field is zero, the field is the same everywhere and the potential is the same everywhere, while the potential is not zero.
which is constant but negative. The field is zero, the field is the same everywhere and the potential is the same everywhere, while the potential is not zero.
JEE Main · 2021 · 26 Aug 2021 · Shift 1 · Single correct option