Question

At ray of light is incident in medium 1 at an angle of ${37}^o$ and gets refracted in medium 2 at an angle of ${53}^o$. What will be angle of refraction if light is incident in medium 2 at an angle of ${53}^o$.

• A. ${37}^o$
• B. ${53}^o$
• C. ${36}^o$
• D. ${45}^o$

Answer 1

Answer: (A)

${37}^o$

Principle of reversibility states that when final path of a ray of light after any number of reflections and refractions is reversed, the ray retraces its entire path or in simple words, light follows exactly the same path if its path of travel is reversed.

Thus angle of refraction of light in medium $1$ will be ${37}^o$.