DP Physics (first assessment 2025)

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Question EXE.2.SL.TZ0.a

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Date Example questions Example questions Marks available [Maximum mark: 3] Reference code EXE.2.SL.TZ0.a
Level SL Paper 2 Time zone TZ0
Command term Explain Question number a Adapted from N/A
a.
[Maximum mark: 3]
EXE.2.SL.TZ0.a

The side of the rod can be unlagged or ideally lagged. Explain the difference in energy transfer for these two cases.

[3]

Markscheme

When ideally lagged, no energy transfer can occur through the sides of the bar. ✓  

All the power input/ energy input per second at one end will emerge at the other end. ✓   

When unlagged, energy transfer occurs from the sides of the bar and the power /energy input per second at input > the energy output per second at the other end. ✓

 

Max 1 if answer does not refer to rate of energy transfer in MP2 and MP3.

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