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Name of the defect where different colours focus at different points (chromatic aberration)

The same question, asked 2 times: 9 May 2024 S1, 13 Apr 2026 S2. Every wording below, oldest first.

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  1. Question 1

    9 May 2024 S1

    30
    The rays of different colours fail to converge at a point after passing through a thick converging lens. This defect is called

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  2. Question 2

    13 Apr 2026 S2

    140
    When a beam of white light is allowed to pass through convex lens parallel to principle axis, the different colors of light converge at different point on the principle axis after refraction. This is called

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