The diagram illustrates a ray of light travelling in an optical fibre. Which statement gives the correct condition for the maximum transmission of light through the optical fibre?
- AThe glass must slow the light as little as possible to make the critical angle for the fibre as large as possible.
- BThe glass must slow the light as little as possible to make the critical angle for the fibre as small as possible.
- CThe glass must slow the light as much as possible to make the critical angle for the fibre as large as possible.
- DThe glass must slow the light as much as possible to make the critical angle for the fibre as small as possible.