I I T 73 Ans 1 414 i 45 r sin 1 3 4 7 The dispersive power

Last updated: 6/30/2023

I I T 73 Ans 1 414 i 45 r sin 1 3 4 7 The dispersive power of crown and flint glasses are 0 03 and 0 05 respectively The refractive indices for yellow light for these glasses are 1 517 and 1621 respectively It is desired to form an achromatic combination of prisms of crown and flint glasses which can produce a deviation of 1 in the yellow ray Find the refracting angles of the two prisms needed Ans 4 8 2 4 1