MCQOPTIONS
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| 1. |
X is thicker in the middle than at the edges, whereas, Y is thicker at the edges than in the middle. Identify ‘X’ and ‘Y’. |
| A. | X = concave lens; Y = convex lens |
| B. | X = convex lens; Y = concave lens |
| C. | X = plane lens; Y = convex lens |
| D. | X = concave lens; Y = plane lens |
| Answer» C. | |