CUET · PHYSICS · PYQ PAPER 2025
When a ray of light is incident on the face AB of prism normally, after refraction it is found to graze the side AC as shown in the figure, the refractive index of the prism is
- A 1.5
- B 1.414
- C 1.33
- D 1.73
Answer & Solution
Correct Answer
(B) 1.414
Step-by-step Solution
Detailed explanation
\( i_c = A = 45^\circ \) \( n \sin(i_c) = 1 \) \( n = \frac{1}{\sin(45^\circ)} \) \( n = \frac{1}{1/\sqrt{2}} = \sqrt{2} \approx 1.414 \)
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