DP Physics (first assessment 2025)

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Question EXE.1A.SL.TZ0.27

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Date Example questions Example questions Marks available [Maximum mark: 1] Reference code EXE.1A.SL.TZ0.27
Level SL Paper 1A Time zone TZ0
Command term Question number 27 Adapted from N/A
27.
[Maximum mark: 1]
EXE.1A.SL.TZ0.27

A star has a radius 13 times that of the Sun and a luminosity that is 400 000 times that of the Sun.

The surface temperature of the Sun is 5700 K.

What is the surface temperature of the star?  


A.  4.0 x 104 K

B.  7.6 x 104 K

C.  1.0 x 105 K

D.  1.4 x 107 K

[1]

Markscheme

A

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