DP Physics (last assessment 2024)

Question 18M.3.HL.TZ2.a.ii

Date	May 2018	Marks available	[Maximum mark: 2]	Reference code	18M.3.HL.TZ2.a.ii
Level	HL	Paper	3	Time zone	TZ2
Command term	Calculate	Question number	a.ii	Adapted from	N/A

a.ii.

[Maximum mark: 2]

18M.3.HL.TZ2.a.ii

It is believed that a non-rotating supermassive black hole is likely to exist near the centre of our galaxy. This black hole has a mass equivalent to 3.6 million times that of the Sun.

Calculate the distance of the event horizon of the black hole from its centre.

Mass of Sun = 2 × 10³⁰ kg

[2]

Markscheme

mass of black hole = 7.2 × 10³⁶ «kg»

« $\frac{{2GM}}{{{c^2}}}$ =» 1 × 10¹⁰ «m»

[2 marks]

Syllabus sections

Option A: Relativity

Option A: Relativity » Option A: Relativity (Additional higher level option topics) » A.5 – General relativity (HL only)

Option A: Relativity » Option A: Relativity (Additional higher level option topics)

Question 18M.3.HL.TZ2.a.ii

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