DP Physics (first assessment 2025)

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Question EXE.1A.SL.TZ0.8

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXE.1A.SL.TZ0.8
Level SL Paper 1A Time zone TZ0
Command term Question number 8 Adapted from N/A
8.
[Maximum mark: 1]
EXE.1A.SL.TZ0.8

Two ideally lagged bars have the same length and are made from the same metal. The diameters of the bars are different. One end of each bar is held at 100 °C and the other end is held at 0 °C.

For each bar


A.  the rate of energy transfer is the same

B.  the temperature gradient is the same

C.  the temperature gradient is non-linear

D.  the temperature gradient ∝1bar diameter2

[1]

Markscheme

B

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