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Question 89
F

A sound pulse takes about 0.003 s to travel between two microphones. A student proposes replacing the electronic timer with a stopwatch and moving the microphones closer together. Which assessment is correct?

[1]
A

Both changes decrease the percentage uncertainty in timing

B

Both changes increase the percentage uncertainty in timing

C

Only moving the microphones closer decreases the percentage uncertainty

D

Only replacing the timer decreases the percentage uncertainty

Markscheme

4 Waves Questions

  1. GCSE
  2. /Physics
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