${\mathrm{P}}_1$ and ${\mathrm{P}}_2$ are identical thin prisms arranged as shown in figure. A ray of white light incident on face of ${\mathrm{P}}_1$ undergoes dispersion and falls on one face of ${\mathrm{P}}_2$. The facing surfaces of prisms are parallel to each other. Then

the ray emerging from ${\mathrm{P}}_2$ will be white even if prisms ${\mathrm{P}}_1$ and ${\mathrm{P}}_2$ have identical geometry but different material

In the light emerging from ${\mathrm{P}}_2$ dispersion will be greater

the direction of light emerging from ${\mathrm{P}}_2$ will be parallel to the direction of ray incident on ${\mathrm{P}}_1$

Light emerging from ${\mathrm{P}}_2$ will be white