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A flint glass prism and a crown glass prism are to be combined in such a way that the deviation of the mean ray is zero. The refractive index of flint and crown glasses for the mean ray are 1.620 and 1.518 respectively. If the refracting angle of the flint prism is 6.0°, what would be the refracting angle of the crown prism?
The refractive index of a material changes by 0.014 as the color of the light changes from red to violet. A rectangular slab of height 2.00 cm made of this material is placed on a newspaper. When viewed normally in yellow light, the letters appear 1.32 cm below the top surface of the slab. Calculate the dispersive power of the material.
A thin prism is made of material having refractive indices 1.61 and 1.65 for red and violet light. The dispersive power of the material is 0.07. It is found that a beam of yellow light passing through the prism suffers a minimum deviation of 4.0° in favorable conditions. Calculate the angle of the prism.
Two prisms of identical geometrical shape are combined with their refracting angles oppositely directed. The materials of the prisms have refractive indices 1.52 and 1.62 for violet light. A violet ray is deviated by 1.0° when passes symmetrically through this combination. What is the angle of the prisms?
Three thin prisms are combined as shown in figure (20-E1). The refractive indices of the crown glass for red, yellow and violet rays are μr, μy and μv respectively and
those for the flint glass are μ’r, μ’y and μ’v respectively. Find the ratio A’A for which A there is no net angular dispersion, and B there is no net deviation in the yellow ray.
A thin prism of angle 6.0°, ω=0.07 and μy =1.50 is combined with another thin prism having ω=0.08 and μy =1.60. The combination produces no deviation in the mean ray. A Find the angle of the second prim. B Find the net angular dispersion produced by the combination when a beam of white light passes through it. C If the prisms are similarly directed, what will be the deviation in the mean ray? D Find the angular dispersion in the situation described in C.
The refractive index of a material M1 changes by 0.014 and that of another material M2 changes by 0.024 as the color of the light is changed from red to violet. Two thin prisms, one made of M1(A=5.3°) and the other made of M2(A=3.7°) are combined with their refracting angles oppositely directed. A Find the angular dispersion produced by the combination. B The prisms are now combined with their refracting angles similarly directed. Find the angular dispersion produced by the combination.