1. | \(180 ~\text{N/kg}\) | 2. | \(0.05 ~\text{N/kg}\) |
3. | \(50 ~\text{N/kg}\) | 4. | \(20 ~\text{N/kg}\) |
Let \(V\) and \(E\) be the gravitational potential and gravitational field at a distance \(r\) from the centre of a uniform spherical shell. Consider the following two statements:
(A) | The plot of \(V\) against \(r\) is discontinuous. |
(B) | The plot of \(E\) against \(r\) is discontinuous. |
1. | Both (A) and (B) are correct. |
2. | (A) is correct but (B) is wrong. |
3. | (B) is correct but (A) is wrong. |
4. | Both (A) and (B) are wrong. |
A planet whose density is double of earth and radius is half of the earth, will produce gravitational field on its surface:
(\(g=\) acceleration due to gravity at the surface of earth)
1. | \(g\) | 2. | \(2g\) |
3. | \(\dfrac{g}{2}\) | 4. | \(3g\) |