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Physical quantities and measurement techniques

Physical quantities and measurement techniques

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Question 72

A student uses a ruler to measure the length of a metal rod.

Her results are shown:

25.4 cm,25.4 cm,25.5 cm,25.2 cm 25.4\text{ cm}, \quad 25.4\text{ cm}, \quad 25.5\text{ cm}, \quad 25.2\text{ cm} 25.4 cm,25.4 cm,25.5 cm,25.2 cm

What is the average length of the rod to three significant figures?

A

25.3 cm25.3\text{ cm}25.3 cm

B

25.4 cm25.4\text{ cm}25.4 cm

C

25.38 cm25.38\text{ cm}25.38 cm

D

25 cm25\text{ cm}25 cm

Markscheme

Physical quantities and measurement techniques Questions

  1. IGCSE
  2. /Physics
  3. /Physical quantities and measurement techniques

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.

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