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Question 20N.3.SL.TZ0.b

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Date November 2020 Marks available [Maximum mark: 4] Reference code 20N.3.SL.TZ0.b
Level SL Paper 3 Time zone TZ0
Command term Sketch Question number b Adapted from N/A
b.
[Maximum mark: 4]
20N.3.SL.TZ0.b

Sketch a ray diagram to find the position of the images for both lenses in the compound microscope at normal adjustment. The object is at O and the focal lengths of the objective and eyepiece lenses are shown.

 

[4]

Markscheme

any 2 correct rays from O for objective lens ✓


forming an intermediate image at approximate position shown
OR
use of image from objective lens as object for eyepiece lens ✓


any 2 correct rays for eyepiece lens from intermediate image ✓

ray extension to form a final image ✓

 

Allow ECF for MP2, MP3 & MP4 for badly drawn rays.

MP4 allow final image to be off the page

Syllabus sections