DP Physics (first assessment 2025)

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Question 22M.1A.SL.TZ1.24

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Date May 2022 Marks available [Maximum mark: 1] Reference code 22M.1A.SL.TZ1.24
Level SL Paper 1A Time zone TZ1
Command term Question number 24 Adapted from N/A
24.
[Maximum mark: 1]
22M.1A.SL.TZ1.24

P and Q are two moons of equal densities orbiting a planet. The orbital radius of P is twice the orbital radius of Q. The volume of P is half that of Q. The force exerted by the planet on P is F. What is the force exerted by the planet on Q?

A.  F

B.  2F

C.  4F

D.  8F

[1]

Markscheme

D

Examiners report

Option D was the most frequent (correct) answer, however option C was a significant distractor, perhaps for candidates considering only the change in orbital radius. A relatively high discrimination index was seen with this question.

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