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The constant ratio of sin i to sin r for a given pair of media is given a specific name in the laws of refraction. What is this law called?
ALaw of dispersion
BNewton's law
CSnell's law
DLaw of reflection
Answer & Solution
Correct answer: C. Snell's law
1. The second law of refraction states sin i / sin r = constant = n for a given pair of media.
2. The chapter explicitly says this second law is also called Snell's law.
3. Newton is associated with the prism spectrum, not this ratio, so that distractor is wrong.
4. Hence the law is Snell's law.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 6 "Refraction of Light", p.83_
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