Show that the limiting value of the angle of prism is twice its critical angle? Hence define critical angle?
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Angle of prism= A = r1 + r2
in case when i1 = i2 = 90 degrees
than r1 = r2 = C
c = critical angles
so, A = C + C
A = 2C
while the critical angle is defined as the angle of refraction when a ray of light enters from on side and refracts and comes out from the other side of the prism
in case when i1 = i2 = 90 degrees
than r1 = r2 = C
c = critical angles
so, A = C + C
A = 2C
while the critical angle is defined as the angle of refraction when a ray of light enters from on side and refracts and comes out from the other side of the prism
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