Welcome to your PHYSICS GRADE 8 MODEL EXAM 2014
PHYSICS GRADE 8 MODEL EXAM 2014
Choose the correct answer
1.
Which of the following one is vector quantity?
2.
One of the following is a reliable unit.
3.
A quantity which is constant in uniformly accelerated motion is:
4.
The slope of distance-time graph is equal to:
5.
Which one is a basic unit?
6.
___________________ is a motion about an axis.
7.
How long does a ball thrown vertically upward at a speed of 25m/s take to reach maximum height?
8.
Which one is an example of contact force?
9.
Which Newton’s law is known by universal law?
10.
Which of the following method of reducing friction is effective?
11.
When a ball is thrown from certain height, which of the following energy conversion happens?
12.
The energy that an object has due to its motion is called __________.
13.
The length of a second order lever is 40cm. if the distance between the load and the effort is 30cm, what is the velocity ratio of the lever?
14.
A 5m long first order lever bar is used to lift a load of 120N by a force of 80N. if fulcrum is situated at a distance of 2m from the end in contact with the load , what is the efficiency of the lever?
15.
An object is taken from the earth to another planet say Mars. Which quantity remains constant?
16.
Which of the following not the criteria to say work is done?
17.
Which of the following is false about force multiplier machine?
18.
One of the following classes of lever is always speed multiplier.
19.
The mechanical advantage of a single movable pulley is______________.
20.
Which of the following machine is not simple machine?
21.
The statement “ have definite shape and size” describe state of matter:
22.
What would be reading of the temperature in Fahrenheit scale ,when the Celsius scale reads half of the Fahrenheit scale?
23.
In which of the following state of media sound travel fastest?
24.
At what temperature does the speed of sound in air four times its value at o0? Vo=331m/s
25.
Reflection of sound from a surface is called __________________.
26.
The SI unit of pressure is called ___________________.
27.
What should be area of the larger piston of a hydraulic press, if it is used to lift a load of 20,000N when a force of 200N is applied on the smaller piston of area 1cm2?
28.
____________ is a rate of electric charge.
29.
An electric lamp is connected to a source that delivers a potential difference of 4.5V. what is the resistance of the lamp when a current of 0.5A flows through it?
30.
Which of the following relation of units is not correct?
31.
Which of the following is the dimensional representation of force?
32.
What is the scientific national equivalent of 10,000m?
33.
The slope of the line under velocity- time graph represent:
34.
Small swimming pool is 600 cm long, 300 cm wide and 200 cm deep. What is the volume in m3?
35.
Two children are pushing a toy one pulls on it with a force of 50 N due the east and other pulls with a force of 54 N due west .what is the net force on the toy?
36.
Which of the following is not the point on the lever?
37.
_______________ are used for attaching pictures on a shops and car windows.
38.
An instrument used to measure electric current is called __________.
39.
A complete path through which electric current flows is called ______________
40.
Which of the following sub particle is positively charged?
41.
Which of the following is not the method of heat transfer?
42.
The SI unit of temperature is :
43.
In uniformly accelerated motion which quantity is constant?
44.
The temperature of a body of mass 0.5 kg is raised from 15 0C to 20 0 What is the amount of heat energy taken by the body if its specific heat capacity is 400 J/kg 0C?
45.
Filaments are made of______
