NEET Physics Huygens Principle MCQ Question
If a wavefront moves from a medium with speed v1 to another medium with speed v2, and the angle of incidence is 30 degrees while the angle of refraction is 20 degrees, what is the ratio of the speed of the wave in the first medium to the speed in the second medium?
5
0.67
22
0.82
Correct Answer
Detailed Explanation
Using Snell's Law, sin(i)/sin(r) = v1/v2. Substituting sin(30 degrees) = 0.5 and sin(20 degrees) ≈ 0.342, we get v1/v2 = 0.5/0.342 ≈ 1.5.
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