DP Physics (last assessment 2024)

Question 17N.3.SL.TZ0.11a.ii

Date	November 2017	Marks available	[Maximum mark: 2]	Reference code	17N.3.SL.TZ0.11a.ii
Level	SL	Paper	3	Time zone	TZ0
Command term	Outline	Question number	a.ii	Adapted from	N/A

a.ii.

[Maximum mark: 2]

17N.3.SL.TZ0.11a.ii

Two of the brightest objects in the night sky are the planet Jupiter and the star Vega.
The light observed from Jupiter has a similar brightness to that received from Vega.

(a.ii)

Outline why the light detected from Jupiter and Vega have a similar brightness, according to an observer on Earth.

[2]

Markscheme

brightness depends on luminosity and distance/b = $\frac{L}{{4\pi {d^2}}}$

Vega is much further away but has a larger luminosity

Accept answer in terms of Jupiter for MP2

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Option B: Engineering physics

Option B: Engineering physics » Option B: Engineering physics (Additional higher level option topics) » B.3 – Fluids and fluid dynamics (HL only)

Option B: Engineering physics » Option B: Engineering physics (Additional higher level option topics)

Question 17N.3.SL.TZ0.11a.ii

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