Physics-Huygens Principle
NEET Physics Huygens Principle MCQ Question
Type: MCQ-numerical-Easy-Class 12
If a wavefront travels through two different media with speeds v1 and v2, and forms angles of incidence i and refraction r respectively, what is the relation between these angles and speeds?
A
sin i / sin r = v1 / v2
B
sin i / sin r = v2 / v1
C
sin r / sin i = v1 / v2
D
sin i = sin r
Correct Answer
Option A
Detailed Explanation
Using Huygens Principle, the relation between the angles of incidence and refraction with the speeds in the respective media is given by sin i / sin r = v1 / v2, as derived from refracted wavefront construction.
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