Physics 9702 · AS & A Level · Errors and uncertainties

Errors and uncertainties — practice question

(a)[1]

Table 1.1 contains some physical quantities. Finish the table by putting a tick (✓) beside the scalar quantities.

(b)

A uniform cylinder has diameter $D$, length $L$ and mass $M$. Its density $\rho$ is given by $\rho = \frac{4M}{\pi D^2 L}$. Table 1.2 contains the experimental data used to find the cylinder's density.

(b(i))[1]

Calculate the percentage uncertainties in $D$ and $L$. Enter your answers in Table 1.2.

(b(ii))[2]

Calculate the density of the cylinder. State your answer to three significant figures.

(b(iii))[2]

Calculate the percentage uncertainty in the density.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Only charge and power are ticked.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI