31 Three prisms of crown glass each have angle of prism 9

Last updated: 5/30/2023

31 Three prisms of crown glass each have angle of prism 9 and two prisms of flint glass are used to make direct vision spectroscope What will be the angle of flint glass prisms if u for flint is 1 60 and u for crown glass is 1 53 a 11 9 c 15 3 b 16 0 d 9 11