Q

Consider the laws of refraction. A: The incident ray, refracted ray and normal do not lie in the same plane. B: For a given colour and pair of media, sin i/sin r is constant. Which is correct?

RRB Technicians Grade-III 24/12/2024 / Shift-III 2024
✓ Answer: A A is false and B is true
The rays and normal are coplanar, so A is false. Snell's law gives a constant ratio sin i/sin r for fixed media and wavelength.
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