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Physics 9 Chapter 7 - Properties of Matter - 11
1.
What is the density of platinum?
a) 123.32kgm
-3
b) 13.600 kgm
-3
c) 9.20 kgm
-3
d) 21500 kgm
-3
2.
What is the quantity called that depends upon the force and increases with the decrease in the area on which force is acting?
a) Pressure
b) Elasticity
c) Temperature
d) Density
3.
What is the force acting normally per unit area on the surface of a body called?
a) Density
b) Elasticity
c) Pressure
d) Temperature
4.
What is the formula of pressure?
a) Pressure = Force + Area
b) Pressure = Force x Area
c) Pressure = Force / Area
d) Pressure = Force - Area
5.
What is the mathematical form of pressure?
a) P = F / A
b) P = F + A
c) P = F x A
d) P = F - A
6.
Which of the following decreases continuously when earth’s atmosphere extends upward?
a) Volume
b) Pressure
c) Density
d) Temperature
7.
How much would be the volume of ice formed by freezing 1 litre of water?
a) 109 litre
b) 10.9 litre
c) 1.09 litre
d) 0.109 litre
8.
The head of a pin is a square of side 10 mm. Find the pressure on it due to a force of 20 N?
a) 2 x 10
2
Nm
-2
b) 2 x 10
5
Nm
-2
c) 2 x 10
3
Nm
-2
d) 2 x 10
4
Nm
-2
9.
Which of the following quantity is pressure?
a) Base quantity
b) Fundamental quantity
c) Scalar quantity
d) Vector quantity
10.
Up to how many kilometres from sea level contains 99% of the mass of the atmosphere?
a) 30 km
b) 10 km
c) 40 km
d) 20 km
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