Physics-(general)
NEET Physics (general) MCQ Question
Type: MCQ-numerical-Hard-Class 12
A plane wave is incident from air onto a medium with a refractive index of 1.5. If the angle of incidence is 30°, what is the angle of refraction?
A
19.47°
B
30°
C
41.81°
D
90°
Correct Answer
Option A
Detailed Explanation
Using Snell's Law, n1sin(i) = n2sin(r), with n1 = 1 (air), n2 = 1.5, and i = 30°, we find sin(r) = (1/1.5)*sin(30°) = 0.333. Therefore, r = 19.47°.
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