A ray of light refracts from medium 1 into a thin layer of medium 2, crosses the layer and is incident at the critical angle on the interface between the medium 2 and 3 as shown in the figure. IF the angle of incidence of ray is theta the value of of theta is:

A ray of light refracts from medium 1 into a thin layer of medium 2, c

1.	A ray of light refracts from medium 1 into a thin layer of medium 2, crosses the layer and is incident at the critical angle on the interface between the medium 2 and 3 as shown in the figure. IF the angle of incidence of ray is theta the value of of theta is:
Answer» <html><body><p>`sin^-1 (8/9)`<br/>`sin^-1 (13/18)`<br/>`sin^-1(13/16)`<br/>`sin^-1(8/13)</p><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a> :D</body></html>