Match List - I with List - II. Choose the correct answer from the options given below :List - I
Optical featureList - II
Optical diagramA. Wave front (isotropic) I. Ellipse B. Wave surface (isotropic) II. Sphere C. Wave front (anisotropic) III. ellipsoidal D. Wave surface (anisotropic) IV. circle
Matching Optical Features and Diagrams
This question requires matching optical features (Wave front, Wave surface) with their corresponding optical diagrams, considering isotropic and anisotropic media.
Analysis of Optical Features
- A. Wave front (isotropic): In an isotropic medium, light travels at the same speed in all directions. A wave front, representing a surface of constant phase, expands spherically from a point source. The cross-section of a spherical wave front is a circle. Therefore, A matches with IV.
- B. Wave surface (isotropic): The wave surface represents the locus of points depicting the propagation speed in different directions. For an isotropic medium, this speed is constant, resulting in a spherical wave surface. Therefore, B matches with II (Sphere).
- C. Wave front (anisotropic): In anisotropic media, the speed of light varies with direction. The wave front is no longer spherical. Depending on the cross-section, it can take various shapes, including an ellipse. Therefore, C matches with I.
- D. Wave surface (anisotropic): The wave surface in anisotropic media is complex and direction-dependent. It's often described as ellipsoidal or related shapes (like the Fresnel wave surface). Therefore, D matches with III (ellipsoidal).
Correct Matching
Based on the analysis:
- A -> IV (Circle)
- B -> II (Sphere)
- C -> I (Ellipse)
- D -> III (ellipsoidal)
This corresponds to the option: A-IV, B-II, C-I, D-III.
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