A level physics paper 3 skills questions 14-25

How do you calculate compound uncertainties for parameters raised to a power?

• Divide the percentage uncertainty by that power
• Multiply the percentage uncertainty by that power
• Subtract the percentage uncertainty from that power
• Add the percentage uncertainty to that power

How do you calculate compound uncertainties for parameters multiplied or divided?

• Subtract the respective percentage uncertainties
• Multiply the respective percentage uncertainties
• Add the respective percentage uncertainties
• Divide the respective percentage uncertainties

How do you calculate compound uncertainties for parameters added or subtracted?

• Subtract the respective percentage uncertainties
• Multiply the respective percentage uncertainties
• Add the respective absolute uncertainties

• Divide the respective percentage uncertainties

How do you determine if a measured value is accurate using maximum and minimum values?

• The known value is within the range
• The value lies within the mean range
• The value lies within the maximum range
• The known value is outside the range

What is the use of percentage difference in drawing conclusions from a graph?

• To comment on the precision of the result
• To comment on the reliability of the result
• To comment on the consistency of the result
• To comment on the accuracy of the result

What indicates random errors in plotted points?

• Significant scatter around the line of best fit
• Points tightly clustered along the line
• Points forming a smooth curve
• Points forming a straight line

What are two signs of systematic errors in graph data?

• Y-axis intercept being non-zero
• Y-axis intercept not being zero when it should be zero
• Pointsshowing random scatter
• Line of best fit being a curve when it should be a straight line

When is using a data logger not preferable?

• For long measurement durations
• For remote situations
• With a pendulum
• For very high sample rates

List three situations in which using a data logger is preferable

• Very high sample rates, long measurement durations, remote situations
• Low sample rates, short measurement durations, easy access situations
• Low sample rates, remote situations, short measurement durations
• Very high sample rates, low sample rates, remote situations

Which is the trigonometric equivalence that is required by the specification?

• Sin²θ + cos²θ=1
• cscθ = 1/sinθ
• sin(2θ)=2sinθcosθ
• tanθ=sinθ/cosθ