# Mock exam paper B Ordinary Level

 PRE-LEAVING CERTIFICATE EXAMINATION, 2012____________Physics - Ordinary level____________3 Hour DurationAnswer three questions from Section A and five questions from Section B

Section A

1

A student carried out an experiment to investigate the relationship between the force applied to the body and the acceleration of the body. The table shows the results obtained

 Force/ N 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Acceleration/ms-2 0.31 0.61 0.93 1.19 1.55 1.84 2.13 2.5

Draw a labelled diagram of the apparatus used in the experiment (9)

Why must the mass be kept constant during the experiment (6)

How is the mass kept constant during the experiment? (7)

Draw a graph, on graph paper, of acceleration against applied force (12)

What does the graph tell you about the relationship between the force and the acceleration of the body? (6)

2

In an experiment to measure the specific heat capacity of a liquid, a quantity of liquid was heated in a copper calorimeter. The following measurements were obtained:

Mass of calorimeter = 80g

Mass of calorimeter and liquid=200g

Initial temperature of calorimeter and liquid = 180C

Final temperature of calorimeter and liquid = 600C

Energy supplied =22378J

Draw a labelled diagram of the equipment you would use in this experiment (9)

Give a formula to calculate the specific heat capacity of the liquid (10)

Given that the specific latent heat of copper is 390J Kg K-1 calculate the specific heat capacity of the liquid (12)

State two sources of error in the experiment and state how one of them could be reduced. ...