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Question
| Column I | Column II | Column III | |
| 1 | Dispersion | Long-sightedness | Twinkling of stars |
| 2 | Refraction | Splitting of white light into component colours | Convex lens |
| 3 | Hypermetropia | Change in the direction of the ray of light due to change in medium | Spectrum of seven colours |
Solution
| Column I | Column II | Column III | |
| 1 | Dispersion | Splitting of white light into component colours | Spectrum of seven colours |
| 2 | Refraction | Change in the direction of the ray of light due to change in medium | Twinkling of stars |
| 3 | Hypermetropia | Long-sightedness | Convex lens |
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