Physics-Huygens Principle
NEET Physics Huygens Principle MCQ Question
Type: MCQ-numerical-Hard-Class 12
Using Huygens' Principle, if the speed of light in the first medium is v1 and in the second medium is v2, what is the relationship between the angles of incidence (i) and refraction (r) when light passes from the first medium to the second?
A
sin i / sin r = v2 / v1
B
sin i / sin r = v1 / v2
C
sin i = sin r
D
sin i * sin r = v1 / v2
Correct Answer
Option B
Detailed Explanation
According to the NCERT context, using Huygens' Principle, the relationship between the angles of incidence and refraction is given by sin i / sin r = v1 / v2. This is derived from the geometry of wavefronts.
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