Physics Tools for optics - Find critical angle and condition for total reflection
Use this simple tool to solve physics problem related to critical angle condition for total reflection or transmittance. You can use this tool for light ray passes from a one medium to another medium with higher index of refraction to find the critical angle and to see whether it has total internal reflection. Simply enter the index of refraction for each medium and the incident angle.
To find whether we have total reflection, we need to find the critical angle.
Condition for total reflection
For total internal reflection , Incident angle > Critical angle
Medium where light coming form must have higher index of refraction compared to second medium ( ni > nt)
For any angle of incidence less than the critical angle, part of the incident light will be transmitted and part will be reflected.