Waec Model Questions Vol1 2021 Physics Question 1

Practice practical question 1 from the 2021 Waec Model Questions Vol1 Physics examination. This question covers Measurements and Units .

Waec Model Questions Vol1 2021 Physics Practical

Topic: Measurements and Units

Question 1 WAEC_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • practical

A student is required to determine the density of an irregular solid using a balance and the water‑displacement method. The solid is first dried and its mass is measured as 150.0 g on a calibrated balance. The solid is then gently placed in a graduated cylinder containing water. The water level rises from 120.0 mL to 165.0 mL. The student records all observations and is asked to analyse the data.

Question Parts

( a )

Calculate the density of the solid in g cm⁻³.

( b )

The standard density of aluminium is 2.70 g cm⁻³. Determine the percentage error in the experimentally obtained density.

( c )

List two possible sources of error that could have affected the density determination.

( d )

Suggest one precaution that would minimise the error identified in part (c).

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About This Question

This is Waec Model Questions Vol1 2021 Physics Question 1. It is one of the practical questions from the 2021 Waec Model Questions Vol1 Physics examination.

The question covers Measurements and Units .

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