Rankers Physics

Total Internal Reflection: Practice Problem & Solution

The speed of light in media M1 and M2 is \[1.5\times 10^{8} m/s and 2.0\times 10^{8}\] respectively. A ray of light enters from medium M1 to M2 at an incidence angle i. If the ray suffers total internal reflection, the value of i is :
Equal to or less than sin–¹(3/5)
Equal to or greater than sin–¹(3/4)
Less than sin–¹(2/3)
Equal to sin–¹(2/3)

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