A beam of unpolarised light is incident on a tourmaline crystal `C_(1)`. The intensity of the emergent light is `I_(0)` and it is incident on another tourmaline crystal `C_(2)`. It is found that no light emerges from `C_(2)`. If now `C_(1)` is rotated through `45^(@)` towards `C_(2)`, the intensity of the light emerging from `C_(2)` is

Options

A. zero
B. `(I_0)/(4)`
C. `(I_0)/(2)`
D. `(3I_0)/(4)`

Answer

C