DP Physics (first assessment 2025)

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Question 19M.2.HL.TZ2.6a

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Date May 2019 Marks available [Maximum mark: 1] Reference code 19M.2.HL.TZ2.6a
Level HL Paper 2 Time zone TZ2
Command term Define Question number a Adapted from N/A
a.
[Maximum mark: 1]
19M.2.HL.TZ2.6a
(a)

Define proper length.

[1]

Markscheme

the length measured «in a reference frame» where the object is at rest ✔

Examiners report

Proper length is quite well understood. A common mistake is to mention that it is the length measured by a reference frame at rest.