A prism with a greater refractive index produces a lesser angle of deviation.

Q. A thin prism $P_1$ of angle 4${}^{\circ }$ and refractive index 1.54 is combined with another thin prism $P_2$ of refractive index 1.72 to produce dispersion without deviation. The angle of $P_2$ is :

Q. A prism with a greater refractive index produces a lesser angle of deviation.

Q. A prism with an angle A=60° produces an angle of minimum deviation 30°.Then the refractive index of the material of prism

Q. A thin prism having refracting angle ${10}^o$ is made of glass of refractive index $1.42$. This prism is combined with another thin prism of glass of refractive index $1.7$. This combination produces dispersion without deviation. The refracting angle of second prism should be

Q. A thin prism of angle ${15}^{\circ }$ made of glass of refractive index ${\mu }_1=1.5$ is combined with another prism of glass of refractive index ${\mu }_2=1.75$. The combination of the prism produces dispersion without deviation. The angle of the second prism should be: