Physics (Essay) Paper 2 WASSCE (PC 2ND), 2020

Question 1

 

(a)        State three uses of dimensions

Observation

 

Majority of the candidates attempted this question but performed poorly because of lack of understanding of the question. Generally, their performance in the question was below average.

The expected response is as stated below:

                     Uses of dimensions

To:
-           verify correctness of a given formula/equation
-           derive the relationship between physical quantities
-           obtain derived units
-           convert a value of a physical quantity from one system of units to another