CUET · PHYSICS · PYQ PAPER 2025
The critical angle is maximum when light travels from
- A glass to air
- B air to water
- C air to glass
- D water to air
Answer & Solution
Correct Answer
(D) water to air
Step-by-step Solution
Detailed explanation
\( \sin \theta_c = \frac{n_2}{n_1} \) For maximum \( \theta_c \), the ratio \( \frac{n_2}{n_1} \) must be maximum (where \( n_1 > n_2 \)). Using \( n_{air} \approx 1.00 \), \( n_{water} \approx 1.33 \), \( n_{glass} \approx 1.50 \): Water to air:…
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