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Question 18M.3.SL.TZ1.1b.i

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Date May 2018 Marks available [Maximum mark: 1] Reference code 18M.3.SL.TZ1.1b.i
Level SL Paper 3 Time zone TZ1
Command term Write down Question number b.i Adapted from N/A
b.i.
[Maximum mark: 1]
18M.3.SL.TZ1.1b.i

A magnetized needle is oscillating on a string about a vertical axis in a horizontal magneticfield B. The time for 10 oscillations is recorded for different values of B.

M18/4/PHYSI/SP3/ENG/TZ1/01_01

The graph shows the variation with B of the time for 10 oscillations together with the uncertainties in the time measurements. The uncertainty in B is negligible.

(b.i)

Write down the time taken for one oscillation when B = 0.005 T with its absolute uncertainty.

[1]

Markscheme

0.84 ± 0.03 «s»

 

Accept any value from the range: 0.81 to 0.87.

Accept uncertainty 0.03 OR 0.025.

[1 mark]

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