What is the thin prism?

What is a thin prism? Write its deviation expression.

There is a thin prism of angle 5^(@) made of material having refractive index 1.6. There is another thin prism made of material of refractive index 1.8. These two prisms are combined in such a manner that they may produce dispersion without mean deviation. What should be the angle of second prism ?

A thin glass prism has a refracting angle of 6^(@) . The angle of incidence is very small . What is the deviation produced by the prism , if the prism is kept in water ? [""_(a) n_(g) = 1.5 , "" _(a) n_(w) = 1.33 ]

What is the deviation produced by a thin prism of angle 8^(@) and of R.I. 1.5?

Thin Prisms

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

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