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Question 22: NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments
At what angle should a ray of light be incident on the face of a prism of refracting angle 60° so that it just suffers total internal reflection at the other face? The refractive index of the material of the prism is 1.524.
Solution:
The beam should be incident at critical angle or more than critical angle, for total internal reflection at second surface of the prism.
Let us first find critical angle for air glass interface.
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 9-Ray Optics and Optical Instruments