In an experiment for determination of refractive index of glass of a prism by

Question:

In an experiment for determination of refractive index of glass of a prism by $\mathrm{i}-\delta$, plot, it was found that a ray incident at angle $35^{\circ}$, suffers a deviation of $40^{\circ}$ and that it emerges at angle $79^{\circ}$. In that case which of the following is closest to the maximum possible value of the refractive index?

  1.  $1.8$

  2. $1.5$

  3. $1.6$

  4. $1.7$


Correct Option: , 2

Solution:

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