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Question 20N.1A.SL.TZ0.23

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Date November 2020 Marks available [Maximum mark: 1] Reference code 20N.1A.SL.TZ0.23
Level SL Paper 1A Time zone TZ0
Command term Question number 23 Adapted from N/A
23.
[Maximum mark: 1]
20N.1A.SL.TZ0.23

Three historical developments in physics were

I.  wave–particle duality
II.  the kinetic model
III.  the equivalence of mass and energy.

Which of these represented a paradigm shift in scientific thinking?

A.  I and II only

B.  I and III only

C.  II and III only

D.  I, II and III

[1]

Markscheme

B

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