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|Published on: Sep 2|Categories: 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…A ray of light is incident at an angle of 30°on a…Which of the following condition is necessary for…A ray of light travelling from glass into ethyl…Total internal reflection. Which of the statements…SEE ALSO The diagram above illustrates a bar magnet near a coil connected to a galvanometer, When the magnet is rapidly moving towards the coil. Which of the statements above is/are correct?