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Question 18N.3.SL.TZ0.8b.ii

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Date November 2018 Marks available [Maximum mark: 1] Reference code 18N.3.SL.TZ0.8b.ii
Level SL Paper 3 Time zone TZ0
Command term Hence, State Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 1]
18N.3.SL.TZ0.8b.ii

The refractive index of glass decreases with increasing wavelength. The diagram shows rays of light incident on a converging lens made of glass. The light is a mixture of red and blue light.

(b.ii)

Hence state how the defect of the converging lens in (a) may be corrected.

[1]

Markscheme

by placing a diverging lens next to the converging lens

OR

make an achromatic doublet ✔

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