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Question 2

Two wires PPP and QQQ have the same extension for the same load.

PPP has a diameter ddd and is made of a metal of density ρ\rhoρ and Young modulus EEE.

QQQ has the same mass and length as PPP but its diameter is 3d3d3d.

What are the density and the Young modulus of the metal from which QQQ is made?

A

Density: ρ3\frac{\rho}{3}3ρ​, Young modulus: E9\frac{E}{9}9E​

B

Density: ρ9\frac{\rho}{9}9ρ​, Young modulus: 9E9E9E

C

Density: ρ9\frac{\rho}{9}9ρ​, Young modulus: E9\frac{E}{9}9E​

D

Density: ρ3\frac{\rho}{3}3ρ​, Young modulus: 3E3E3E

Markscheme

Materials Questions

  1. A Level
  2. /Physics
  3. /Materials

20 exam-style questions on AQA A Level Physics Materials, covering Bulk properties of solids and The Young modulus. Each one has a worked solution and a mark scheme showing where the marks go.

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