The refractive index of a given transparent medium is 1.4. Which of the following is the minimum internal angle for total internal reflection to take place in the medium? by Sunday | Sep 2 | Physics WAEC | 0 comments A. 30° B. 36° C. 44° D. 46° E. 54° Correct Answer: Option D – 46° Users Also Read These:The refractive index of a medium relative to air is…The refractive index of a material is 1.5. Calculate…A ray of light is incident on an equilateral…A ray of light travelling from glass into ethyl…A to eater to glass to air to water to glass to air.…