Question
A prism has a refractive index of 1.5 and a refracting
angle of 60°.One of its refracting faces is polished to act like a mirror. A monochromatic beam of light is incident on the other face. For the light beam to retrace its path , the angle of incidence at the first face should be:Solution
Given:
- Refractive index of prism, μ=1.5
- Refracting angle of prism, A= 60°
- One refracting face is silvered (acts like a mirror).
- A monochromatic beam is incident on the other refracting face .
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