In a direct vision sperctroscope there are four crown glass prisms of angle 5^(@) each and three flint glass prisms. The dispersive powers of crown and flint glass are 0.03 and 0.05, repectively and their refractivities ar 0.518 and 0.655. Calculate the dispersion produced and the angle of the flint glass prisms required for no deviation.

In a direct vision sperctroscope there are four crown glass prisms of

1.	In a direct vision sperctroscope there are four crown glass prisms of angle 5^(@) each and three flint glass prisms. The dispersive powers of crown and flint glass are 0.03 and 0.05, repectively and their refractivities ar 0.518 and 0.655. Calculate the dispersion produced and the angle of the flint glass prisms required for no deviation.
Answer» ANSWER :12'26'', `5^(@)16'`

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