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Question 19M.1.HL.TZ2.22

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.1.HL.TZ2.22
Level HL Paper 1 Time zone TZ2
Command term Question number 22 Adapted from N/A
22.
[Maximum mark: 1]
19M.1.HL.TZ2.22

Two stars are viewed with a telescope using a green filter. The images of the stars are just resolved. What is the change, if any, to the angular separation of the images of the stars and to the resolution of the images when the green filter is replaced by a violet filter?

[1]

Markscheme

A

Examiners report

Another question with a low discrimination index and candidates choosing all 4 responses with B the most popular. Remembering that angular separation is dependent on the stars position in space relative to each other so unlikely to have been changed by a coloured filter would have helped to eliminate A and D.

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