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Question 19N.3.SL.TZ0.7b(i)

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Date November 2019 Marks available [Maximum mark: 1] Reference code 19N.3.SL.TZ0.7b(i)
Level SL Paper 3 Time zone TZ0
Command term Sketch Question number b(i) Adapted from N/A
b(i).
[Maximum mark: 1]
19N.3.SL.TZ0.7b(i)

A planar wavefront of white light, labelled A, is incident on a converging lens. Point P is on the surface of the lens and the principal axis. The blue component of the transmitted wavefront, labelled B, is passing through point P.

(b(i))

Sketch, on the diagram, the wavefront of red light passing through point P. Label this wavefront R.

[1]

Markscheme

“circular” wave front through P: symmetric about the principal axis AND of greater radius than B ✔

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