Thin Prisms

Minimum Deviation||Thin Prism||Dispersion Without Deviation||Deviation Without Dispersion

Thin prism has small____-

Two thin prisms are combined to form an achromatic combination. For prism I, A=4^(@),mu_(R)=1.35, mu_(Y)=1.40,mu_(v)=1.42 For prism II, mu_(R)^(')=1.7, mu_(Y)^(')=1.8 and mu_(V)^(')=1.9 . Find the prism angle of prism II and the net mean deviation.

Three thin prisms are combined as shown in figure . The refractive indices of the crown glass for red , yellow and violet rays are mu_r,mu_yand mu_v respectively and those for the flint glass are mu_r',mu_y'and mu_v' respectively . Find the ratio (A')/A for which , there is no net angular dispersion (A and A' are respective deviations )

Two thin prisms are combined such that they neither produce any average deviation nor do they cause any dispersion when white light is incident on the combination. Angle of one prism is A = 2° and refractive index of its glass for red, yellow and violet lights are 1.49, 1.50 and 1.51 respectively. Find the dispersive power of the glass of the other prism.

Column - II shows the optical phenomenon that can be associated with optical components given in column- I . Note the column - I may have more than one matching options in column-II. {:("Column I","Column II"),((A)"Convex mirror",(p)"Dispersion"),((B)"Converging lens",(q) "Deviation"),((C)"Thin prism" , (r) "Real image of real object") , ((D) "Glass slab", (s) "Virtual images of real object"):}

For thin prism angle of minimum deviation( delta ) is given by

A thin prism P of refracting angle 3^(@) and refractive index . 1.5 is combined with another thin prism Q of refractive index 1.6 to produce dispersion without deviation. Then the angle of prism Q is