The weight of an object is determined using a two-pan balance. The object is placed in the left-hand pan, and various standard weights are placed in the right-hand pan.
The results of two trials are shown in the table below:
| Weights in the right-hand pan | Effect |
|---|---|
| 0.5 N, 0.2 N, 0.1 N, 0.05 N | Balance tips down slightly on the left-hand side |
| 0.5 N, 0.2 N, 0.2 N, 0.02 N | Balance tips down slightly on the right-hand side |
What is the best estimate of the weight of the object?
0.83 N0.83\text{ N}0.83 N
0.89 N0.89\text{ N}0.89 N
0.94 N0.94\text{ N}0.94 N
1.77 N1.77\text{ N}1.77 N
164 exam-style questions on CIE IGCSE Physics Physical quantities and measurement techniques, covering Physical quantities and measurement techniques. Each one has a worked solution and a mark scheme showing where the marks go.