Question

a ray of light travels from a medium of refractive index n into air. if the angle of incidence at the plane surface of seperation is theta and the corresponding angle of deviation is delta the variation of delta with theta is shown correctly in the figure​

Answer 1

Answer:

$refractive \: index=\frac{sin \angle i}{sin\angle r}\\ \Rightarrow n=\frac{sin \angle i}{sin\angle r}\\ \Rightarrow sin \angle r=\frac{sin \angle i}{n}\\ \Rightarrow \angle r=sin^{-1}(\frac{sin \angle i}{n})\\ \\ \delta=\angle r-\angle i\\ \Rightarrow \delta=sin^{-1}(\frac{sin \angle i}{n})-\angle i$

Express this equation

in the form of $\delta=f(i)$

and plot its graph. Hence, find the

correct option.