Question
1.
2.
3.
4.
Answer (Detailed Solution Below)
Option 2 : $41.8^{\circ}$ / $41.8^{\circ}$
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Detailed Solution
सही उत्तर $41.8^{\circ}$ / $41.8^{\circ}$ है।
Key Points
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prepsnap.in • Part -AQuestion:
The critical angle for a glass-air interface (refractive index of glass $= 1.5$) is approximately: / काँच-वायु अंतरापृष्ठ के लिए क्रांतिक कोण (काँच का अपवर्तनांक $= 1.5$) लगभग है:
1.
$30^{\circ}$ / $30^{\circ}$
2.
$41.8^{\circ}$ / $41.8^{\circ}$
3.
$48.6^{\circ}$ / $48.6^{\circ}$
4.
$60^{\circ}$ / $60^{\circ}$
Correct Answer: $41.8^{\circ}$ / $41.8^{\circ}$
$\sin C = 1/\mu = 1/1.5 = 0.667$, so $C = \sin^{-1}(0.667) \approx 41.8^{\circ}$. / $\sin C = 1/\mu = 1/1.5 = 0.667$, अतः $C = \sin^{-1}(0.667) \approx 41.8^{\circ}$।
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