For a surface molecule,
(a) | The net force on it is zero. |
(b) | There is a net downward force. |
(c) | The potential energy is less than that of a molecule inside. |
(d) | The potential energy is more than that of a molecule inside. |
Choose the correct alterative/s:
1. (b), (c)
2. (b), (d)
3. (c), (d)
4. (a), (d)