N level Sc Physics 2016
Quiz by Lee Tai Shen
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- Q1
Which statement about scalar quantities and vector quantities is correct?
Vectors have size and direction.
Vectors have direction only.
Scalars have size and direction.
Scalars have direction only.
120s - Q2
Which graph shows the acceleration of free-fall for an object at different heights above the surface of the Earth?
Refer to the image for the graph.
B
D
C
A
120s - Q3
Which force opposes the motion of an object sliding over a surface?
friction
inertia
acceleration
gravity
120s - Q4
A space probe of mass 500 kg is sent to an asteroid which has a gravitational field strength of 0.014 N/kg.
What is the weight of the probe when it lands on the asteroid?
7.0 N
36000 N
70 N
3600 N
120s - Q5
Two blocks X and Y are placed on a uniform beam. The beam balances on a pivot at its centre.
What does this show about X and Y?
Refer to the image for the diagram.
They have the same mass and the same weight.
They have the same volume and the same weight.
They have the same mass and the same density.
They have the same volume and the same density.
120s - Q6
There is a hole in the handle of a hammer so that it can be hung from a nail. The centre of gravity of the hammer is marked G.
Which hammer is the most unstable?
Refer to the image for the options.
C
D
A
B
120s - Q7
A pin is squeezed between finger and thumb.
Which statement is correct?
Refer to the image for the diagram.
The pressure of the pin is larger on the finger than on the thumb.
The force of the pin is larger on the thumb than on the finger.
The pressure of the pin is larger on the thumb than on the finger.
The force of the pin is larger on the finger than on the thumb.
120s - Q8
What is the principle of conservation of energy?
Energy cannot be created.
Energy cannot be created or destroyed.
Energy cannot be lost to the surroundings.
Energy can be stored.
120s - Q9
A boy and a girl run up the same flight of stairs on two occasions.
On the first occasion, they both take 10 s.
On the second occasion, they both take 20 s.
The boy weighs 600 N and the girl weighs 400 N.
Who produces the most power, and when?
the boy when he takes 10 s
the girl when she takes 20 s
the girl when she takes 10 s
the boy when he takes 20 s
120s - Q10
Which row describes the properties of solids and of liquids at constant temperature?
See image for options.
D
B
C
A
120s - Q11
Two metal boxes X and Y contain air. Box X is on top of a warm kitchen stove that is turned on. Box Y is on a table.
The boxes are left for a long time.
See the image for the diagram.
The molecules in box Y are not moving.
The molecules are faster in box X.
The molecules in the boxes are moving at the same speed.
The molecules are faster in box Y.
120s - Q12
A heater supplies 80 J of energy to a box of metal. The temperature of the block rises by 20 oC.
What happens to the internal energy of the block when its temperature falls by 10 oC?
increases by 160 J
decreases by 160 J
increases by 40 J
decreases by 40 J
120s - Q13
See the image below for the question and options.
D
C
B
A
120s - Q14
See the image below for the question and options.
D
A
C
B
120s - Q15
A gun is fired into the air by a man standing at point X.
A man standing at point Y hears the sound twice, once by the direct route and once by reflection off the wall.
The speed of sound is 300 m/s.
What is the time interval between hearing the two sounds.
See the image for the diagram.
1.0 s
0.50 s
0.25 s
2.0 s
120s
