KCET 2013 Physics Solved Paper

Question : 18 of 60

Marks: +1, -0

The speed of light in media M1 and M2 are 1.5×108ms−1 and 2×108ms−1 respectively. A ray travels from medium M1 to the medium M2 with an angle of incidence θ. The ray suffers total internal reflection. Then the value of the angle of incidence θ is