In the figure, a light ray is incident on the lower medium boundary at an angle of 45 the normal. Which of the following statements are true?
There will be two conditions possible for the given situation
For the first condition where total internal reflection will not take place,
From the figure,
Applying Snell’s law
2sin45∘=μ2sinr …… (1)
∴μ2sinr=√2sine …… (2)
From the equation (1) and (20
Therefore the deviation will be 45∘
Now for the second condition that the total internal reflection will not take place
Hence for this condition, it can be seen from the figure
The deviation will be 90∘
The correct answer is option (A) and (B).