CUET · PHYSICS · PYQ PAPER 2025
The angle of minimum deviation if the refracting angle of a prism is \(2θ\), and the refractive index of the material of the prism is \(\cot θ\) is:
- A \(\frac{\pi}{2} - 2θ\)
- B \(\pi - 2\theta\)
- C \(\pi + 2\theta\)
- D \(\pi - 4\theta\)
Answer & Solution
Correct Answer
(D) \(\pi - 4\theta\)
Step-by-step Solution
Detailed explanation
\( \mu = \frac{\sin\left(\frac{A + \delta_m}{2}\right)}{\sin\left(\frac{A}{2}\right)} \) \( \cot \theta = \frac{\sin\left(\frac{2\theta + \delta_m}{2}\right)}{\sin\left(\frac{2\theta}{2}\right)} \)…
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