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Question 18M.3.HL.TZ1.b.ii

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.HL.TZ1.b.ii
Level HL Paper 3 Time zone TZ1
Command term State Question number b.ii Adapted from N/A
b.ii.
[Maximum mark: 1]
18M.3.HL.TZ1.b.ii

Type Ia supernovae typically have a peak luminosity of around 5 × 105 Ls, where Ls is the luminosity of the Sun (3.8 × 1026 W). A type Ia supernova is observed with an apparent peak brightness of 1.6 × 10–6 W m–2.

State one assumption made in your calculation.

[1]

Markscheme

type Ia supernova can be used as standard candles

there is no dust absorbing light between Earth and supernova

their supernova is a typical type Ia

[1 mark]

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