An object may have:
(a) | varying speed without having a varying velocity. |
(b) | varying velocity without having varying speed. |
(c) | non-zero acceleration without having a varying velocity. |
(d) | non-zero acceleration without having varying speed. |
Choose the correct option from the given ones:
1. | (a) and (b) only |
2. | (b) and (c) only |
3. | (c) and (d) only |
4. | (b) and (d) only |