NEET Physics Huygens Principle MCQ Question
Using Huygens' principle, if a wavefront of light with speed v1 in medium 1 strikes a boundary with medium 2 at an angle of incidence i, and the speed of light in medium 2 is v2, what is the angle of refraction r if v1 = 2v2?
r = arcsin(sin(i)/2)
r = 2 * arcsin(sin(i))
r = arcsin(2 * sin(i))
r = sin(i)/2
Correct Answer
Detailed Explanation
Using Snell's law derived from Huygens' principle, sin(i)/sin(r) = v1/v2. Given v1 = 2v2, we have sin(r) = sin(i)/2.
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