ACB is $$right-angled$$ prism with other angles as $$60$$° and $$30$$°. Refractive index of the prism is $$1.5$$. AB has thin layer of liquid on it as shown. Light falls normally on the face AC. For total internal reflections, maximum refractive index of the liquid is

Question

Infinity Learn · Accepted Answer

Clearly, ic≤$$60$$°So. maximum possible value of ic is $$60$$°Now, μ$$g=1sin$$ ic μgμ$$1=1sin$$ icor       μ$$1=$$μg $$sin$$ ic $$=$$ $$1.5$$ $$sin$$ $$60$$° $$=$$ $$1.5$$ ×$$32$$                $$=1.5$$ × $$0.866$$ $$=$$ $$1.299$$ $$=$$ $$1.3$$

ACB is right-angled prism with other angles as 60° and 30°. Refractive index of the prism is 1.5. AB has thin layer of liquid on it as shown. Light falls normally on the face AC. For total internal reflections, maximum refractive index of the liquid is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material