Question
How is the electric potential difference between the two points defined? State its S.I. unit.
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| S.No | Description | Label |
| (a) | The refractive index of glass | $\sin i / \sin r$ |
| (b) | Relation between angles i and e | |
| (c) | Two rays which are parallel to each other | |
| (d) | Lateral displacement between the emergent ray and incident ray. | |
| (e) | State one factor which affects the lateral displacement |