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Making measurements and analysing data

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Question 5

A micrometer is used to measure the diameter of a thin metallic wire.

The micrometer has a zero error of -0.03 mm. The measured value of the diameter from the micrometer scale is 1.41 mm.

What is the correct cross-sectional area of the wire?

A

1.50×10−6 m21.50 \times 10^{-6}\text{ m}^21.50×10−6 m2

B

1.56×10−6 m21.56 \times 10^{-6}\text{ m}^21.56×10−6 m2

C

1.63×10−6 m21.63 \times 10^{-6}\text{ m}^21.63×10−6 m2

D

6.51×10−6 m26.51 \times 10^{-6}\text{ m}^26.51×10−6 m2

Markscheme

Making measurements and analysing data Questions

  1. A Level
  2. /Physics
  3. /Making measurements and analysing data

26 exam-style questions on OCR A A Level Physics Making measurements and analysing data, covering Measurements and uncertainties. Each one has a worked solution and a mark scheme showing where the marks go.

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