$A$ light ray is incident on the surface of a sphere of refractive index $n$ at an angle of incidence $\theta_0$. The ray partially refracts into the sphere with angle of refraction $\phi_0$ and then partly reflects from the back surface. The reflected ray then emerges out of the sphere after a partial refraction. The total angle of deviation of the emergent ray with respect to the incident ray is $\alpha$. Match the quantities mentioned in $List-I$ with their values in $List-II$ and choose the correct option.
$List-I$$List-II$
$(P)$ If $n=2$ and $\alpha=180^{\circ}$,then all the possible values of $\theta_0$ will be$(1)$ $30^{\circ}$ and $0^{\circ}$
$(Q)$ If $n=\sqrt{3}$ and $\alpha=180^{\circ}$,then all the possible values of $\theta_0$ will be$(2)$ $60^{\circ}$ and $0^{\circ}$
$(R)$ If $n=\sqrt{3}$ and $\alpha=180^{\circ}$,then all the possible values of $\phi_0$ will be$(3)$ $45^{\circ}$ and $0^{\circ}$
$(S)$ If $n=\sqrt{2}$ and $\theta_0=45^{\circ}$,then all the possible values of $\alpha$ will be$(4)$ $150^{\circ}$
$(5)$ $0^{\circ}$

  • A
    $P \rightarrow 5 ; Q \rightarrow 2 ; R \rightarrow 1 ; S \rightarrow 4$
  • B
    $P \rightarrow 5 ; Q \rightarrow 1 ; R \rightarrow 2 ; S \rightarrow 4$
  • C
    $P \rightarrow 3 ; Q \rightarrow 2 ; R \rightarrow 1 ; S \rightarrow 4$
  • D
    $P \rightarrow 3 ; Q \rightarrow 1 ; R \rightarrow 2 ; S \rightarrow 5$

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