A parallel beam of light falls normally on the first face of a prism of small angle
PHYSICS · Subjective · CBSE · Physics · Ray Optics and Optical Instruments · Ray Optics and Optical Instruments
Problem
A parallel beam of light falls normally on the first face of a prism of small angle. At the second face, it is partly transmitted and partly reflected. The reflected beam, striking the first face again, emerges from it in a direction making an angle of 6∘30′ with the reversed direction of the incident beam. The refracted beam is found to have undergone a deviation of 1∘15′ from the original direction. Calculate the refractive index of the glass and the angle of the prism.