Waec Model Questions Vol1 2018 Physics Question 1

Practice practical question 1 from the 2018 Waec Model Questions Vol1 Physics examination. This question covers Measurements and Units .

Waec Model Questions Vol1 2018 Physics Practical

Topic: Measurements and Units

Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2018 • PHYSICS • practical

A metal rod of nominal length 150.0 mm is to be measured using a vernier caliper. The student records five successive readings: 150.2 mm, 150.4 mm, 150.1 mm, 150.3 mm and 150.5 mm. The true length supplied by the manufacturer is 150.0 mm.

Question Parts

( a )

Calculate the mean length of the rod from the five readings.

( b )

Determine the absolute uncertainty of the measurement as half the range of the readings.

( c )

Calculate the percentage error of the measured mean length with respect to the true length.

( d )

State two possible sources of error in the measurement and suggest a method to reduce each.

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About This Question

This is Waec Model Questions Vol1 2018 Physics Question 1. It is one of the practical questions from the 2018 Waec Model Questions Vol1 Physics examination.

The question covers Measurements and Units .

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