Free Waec Physics Practical Answers 31st May 2022

Becareful‼️

Ask from your School Physics teacher for the school value before you commence on your answers…. your school value matters alot…💯💯

NOTE

For question 1

Use your school’s Mo = ???

Use your school’s m = ???

Use your school’s d = AG = ???

 

G

NO1 GRAPH

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(2aix)
-precautions-
-I ensured that all apparatus are in straight line
-I avoided error due to parallax when reading the metre rule
-I avoided zero error on the metre rule

The characteristics of image formed are:
-It is virtual
-It is enlarged and magnified ie twice or two times as big as the object m=2

(2bi)
u=10cm
f=15cm
Using 1/v+1/u=1/f
1/f-1/u=1/v
1/v =1/15-1/10
1/v =(2-3)/30
1/v=-1/30
v=-30cm

(2bii)
The concave mirror mounted in its holder is moved to and fro in front of the screen until a sharp image of the cross wire of the ray box is formed on the screen adjacent of the object.The distance between the mirror and the screen was measured as 30cm since the radius of curvature r=2fo then half is distance

(2bi)
The characteristics of imaged formed are :
i)It is virtual
ii) It is enlarged or magnified i.e. twice or two times bigger as the object(m=2)

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(3)

-Precautions-
(i)I will avoid Parallax error was avoided on ammeter
(ii)I will ensure Key opened when reading was not being taken
(iii)I will avoid sliding of jockey on the potentiometer wire.


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