A deviation of 2^° is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking dispersive powers of crown…

A deviation of $\displaystyle 2^{\circ}$ is produced in the yellow ray when prism of crown and flint glass are achromatically combined. Taking dispersive powers of crown and flint glass as $\displaystyle 0.02$ and $\displaystyle 0.03$ respectively and refractive index for yellow light for these glasses are $\displaystyle 1.5$ and $\displaystyle 1.6$ respectively. The refracting angles for crown glass prism will be \_\_\_\_° (in degree). (Round off to the Nearest Integer)