EASY
AS and A Level
IMPORTANT
Earn 100

Figure shows a lever-arm balance, initially with no mass in the pan and then with a standard 200 g mass in the pan. Explain what types of error might arise in using this equipment.

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The scales on a lever-arm balance.

Important Questions on Practical Skills at AS Level

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 5
Estimate the uncertainty when a student measures the length of a room using a steel tape measure calibrated in millimetres.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 6

Estimate the uncertainty when a girl measures the temperature of a bath of water using the thermometer in Figure.

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EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 7
A student is asked to measure the wavelength of waves on a ripple tank using a metre rule that is graduated in millimetres. Estimate the uncertainty in his measurement.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 8
Estimate the uncertainty when a student attempts to measure the time for a single swing of a pendulum.
EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 9

What is the average value and uncertainty in the following sets of readings? All are quoted to be consistent with the smallest scale division used.

20.6,20.8

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 9

What is the average value and uncertainty in the following sets of readings? All are quoted to be consistent with the smallest scale division used.

20,30,36

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 9

What is the average value and uncertainty in the following sets of readings? All are quoted to be consistent with the smallest scale division used.

(c) 0.6,1.0,0.8,1.2

EASY
AS and A Level
IMPORTANT
Physics for Cambridge International AS & A Level Coursebook 3rd Edition Digital Access>Chapter 32 - Practical Skills at AS Level>Questions>Q 9

What is the average value and uncertainty in the following sets of readings? All are quoted to be consistent with the smallest scale division used.

(d) 20.5,20.5.