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Ray Optics — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsRay Optics1 Mark
MCQ
For a small angled prism, angle of prism $A$, the angle of minimum deviation $(\delta)$ varies with the refractive index of the prism as shown in the graph

Image

  • A
    (a) Point $P$ corresponds to $\mu=1$
  • B
    (b) Slope of the line $P Q=A / 2$
  • C
    (c) Slope $=A$
  • D
    (d) None of the above statements is true
✓

Answer

(a, c) At $P, \delta=0=A(\mu-1) \Rightarrow \mu=1$.Also $\delta_m=(\mu-1) A=A \mu_m-A$Comparing it with $y=m x+c$Slope of the line $=m=A$

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