The Brewsters angle `i_b` for an interface should be:

Options

A. `0^(@) lt i_(b) lt 30^(@)`
B. `30^(@) lt i_(b) lt 45^(@)`
C. `45^(@) lt i_(b) lt 90^(@)`
D. `i_(b)= 90^(@)`

Answer

C

Explanation

`mu= tan i_(b)`
`1 lt mu lt oo`
`1 lt tan i_(b) lt oo`
`tan^(-1) lt i_(b) lt tan^(-1)oo`
`45^(@) lt i_(b) lt 90^(@)`