(Solved): Two different glasses - glass \( A \) and glass \( B \) - are separated by a planar boundary as sh ...

Two different glasses - glass \( A \) and glass \( B \) - are separated by a planar boundary as shown in the figure. A light ray - shown in the lower left part of the figure - approaches and then hits the boundary. Part of the ray reflects back to glass \( A \), part of the ray enters glass \( B \). The index of refraction of glass \( A \) is \( n_{A}=1.214 \). Determine the index of refraction of glass \( B \). (Notice that the lines representing the light rays travel through grid intersection points.)