Question:medium
One side of an equilateral prism is painted by a transparent material of refractive index \( n_2 \). The refractive index of prism is 1.6. The minimum value of \( n_2 \) required for total internal reflection from the painted face is _______.
One side of an equilateral prism is painted by a transparent material of refractive index \( n_2 \). The refractive index of prism is 1.6. The minimum value of \( n_2 \) required for total internal reflection from the painted face is _______.
Updated On: Apr 10, 2026
- \( \frac{\sqrt{3}}{1.6} \)
- \( \sqrt{3} \)
- \( \frac{3.2}{\sqrt{3}} \)
- \( \frac{4\sqrt{3}}{5} \)
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The Correct Option is B
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