NEET Physics Refraction MCQ Question
A light ray passes from air into a glass slab with a refractive index of 1.5. If the angle of incidence is 30°, what is the angle of refraction inside the glass?
19.5°
28.0°
33.4°
45.0°
Correct Answer
Detailed Explanation
Using Snell's law, n1sin(i) = n2sin(r), with n1 = 1 (air), n2 = 1.5 (glass), and i = 30°, we calculate r = sin^(-1)(sin(30°)/1.5) = 19.5°.
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