For a small angled prism, angle of prism `A` of minimum deviation`(delta)` varies with the refractive index of the prism as shown in the graph

Options

A. Point P corresponds to `mu=1//2`
B. Slope of the line `PQ=A//2`
C. Slope=A
D. None of the above statements is true

Answer

C

Explanation

`delta=(mu-1)Aimpliesy=(x-1)A=xA-A`
Comparing with `y=mx+C`
Slope: `m=A`