$A$ glass prism having a refractive index $\mu$ is placed in air. If the angle of minimum deviation of the prism is equal to the angle of the prism,what is the value of the angle of the prism?

Monochromatic light of wavelength $6000 Å$ is incident on a small-angled prism. If the angle of the prism is $6^{\circ}$ and the refractive indices of the material of the prism for violet and red lights are $1.52$ and $1.48$ respectively, then the angle of dispersion produced for this incident light is: (in $^{\circ}$)

Three glass prisms $A, B$ and $C$ of the same refractive index are placed in contact with each other as shown in the figure,with no air gap between the prisms. $A$ monochromatic ray of light $OP$ passes through the prism assembly and emerges as $QR$. The conditions of minimum deviation are satisfied in which prisms?

$A$ glass prism of refracting angle $60^{\circ}$ is immersed in a liquid in which the angle of minimum deviation is $30^{\circ}$. The critical angle of glass with respect to the liquid medium is (in $^{\circ}$)

$A$ thin hollow prism of refracting angle $3^{\circ}$,filled with water,gives a deviation of $1^{\circ}$. The refractive index of water is

$A$ plot between the angle of deviation and angle of incidence is shown in the figure. From the graph,one can say that the prism angle is ....... (in $^{\circ}$)