Published by:
CGP EDU Academic Team
Published on: September 12, 2026
The figures represent three cases of a ray passing through a prism of angle A . The case corresponding to minimum deviation is
Text Solution
Verified by ExpertsThe correct answer is:
B
In the case of a prism, minimum deviation occurs when the ray of light passes symmetrically through the prism. This means that the angles of incidence and refraction at both surfaces of the prism are equal.
- **Step 1:** Analyzing each figure:
In figure (1), the light ray enters and exits at angles that are not equal, indicating it is not in the condition for minimum deviation.
In figure (2), the angles of incidence and refraction are equal on both surfaces, confirming that this configuration aligns with the principle of minimum deviation.
In figure (3), the characteristics of refraction again show unequal angles, thus not representing minimum deviation.
- **Conclusion:** Therefore, the case corresponding to minimum deviation is represented in Option B (2).
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