DP Physics (last assessment 2024)

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Question 23M.3.HL.TZ2.a

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Date May 2023 Marks available [Maximum mark: 1] Reference code 23M.3.HL.TZ2.a
Level HL Paper 3 Time zone TZ2
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 1]
23M.3.HL.TZ2.a

Explain why the frequency of the photons detected at the ceiling is less than the frequency of those emitted from the floor.

[1]

Markscheme

some photon energy is used to do work against the gravitational field

OR

mention of gravitational redshift ✓

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