AP EAMCET · PHYSICS · Ray Optics
A ray is incident from a medium of refractive index into a medium of refractive index . The critical angle is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Critical angle is defined as the angle of incidence, when light is travelling from denser medium to rarer medium, at which the angle of refraction is 90°. Therefore, ic=sin-1μ2μ1=sin-112=30°
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