1.
Beyond elastic limit, a material:
A
Returns to original shape
B
Shows permanent deformation
C
Becomes rigid
D
Stops stretching
2.
Why do camels have wide feet?
A
To run fast
B
To increase pressure
C
To decrease pressure
D
To reduce weight
3.
What happens to the shape of a body when a force is applied?
A
It always breaks
B
It may change
C
It becomes heavier
D
It stops moving
4.
The unit of spring constant is:
A
Newton
B
Newton per meter
C
Meter
D
Pascal
5.
What is the spring constant?
A
Force per unit mass
B
Extension per unit force
C
Force per unit extension
D
Area per unit force
6.
A manometer is used to measure:
A
Atmospheric pressure only
B
Liquid pressure only
C
Gas pressure
D
Temperature
7.
Atmospheric pressure decreases with:
A
Depth
B
Temperature
C
Height
D
Humidity
8.
According to Hooke’s Law, force is proportional to:
A
Mass
B
Pressure
C
Extension
D
Area
9.
Which is an application of Pascal’s Law?
A
Barometer
B
Hydraulic lift
C
Thermometer
D
Speedometer
10.
Which material shows elasticity?
A
Clay
B
Rubber band
C
Wet mud
D
Butter
11.
The working liquid in a mercury barometer is:
A
Water
B
Oil
C
Mercury
D
Alcohol
12.
Why is atmospheric pressure lower on mountains?
A
More air
B
Less air above
C
More gravity
D
Higher temperature
13.
Hydraulic machines work on:
A
Hooke’s Law
B
Pascal’s Law
C
Archimedes’ Principle
D
Newton’s Law
14.
In a load-extension graph, the straight line shows:
A
Breaking point
B
Elastic behavior
C
Plastic behavior
D
Failure point
15.
A stiffer spring has:
A
Smaller spring constant
B
Zero spring constant
C
Larger spring constant
D
Negative spring constant
16.
Hooke’s Law is valid up to:
A
Breaking point
B
Elastic limit
C
Melting point
D
Yield point
17.
What is pressure?
A
Force × area
B
Force / area
C
Area / force
D
Mass × force
18.
What happens to pressure if force doubles and area halves?
A
No change
B
Doubles
C
Triples
D
Becomes four times
19.
What is deformation?
A
Change in mass
B
Change in volume only
C
Change in shape or size
D
Change in temperature
20.
Liquid pressure depends on:
A
Shape of container
B
Depth of liquid
C
Color of liquid
D
Area of container
21.
Atmospheric pressure is due to:
A
Weight of water
B
Weight of air
C
Earth’s rotation
D
Sun’s heat
22.
Liquid pressure increases with:
A
Height
B
Density
C
Depth
D
All of these
23.
Which instrument measures atmospheric pressure?
A
Manometer
B
Thermometer
C
Barometer
D
Hygrometer
24.
The limit of proportionality is the point where:
A
Graph becomes horizontal
B
Extension stops
C
Force is zero
D
Graph stops being straight
25.
Which force can change the size of a body?
A
Balanced force
B
Applied force
C
Gravitational force only
D
Magnetic force only
26.
The SI unit of pressure is:
A
Newton
B
Joule
C
Pascal
D
Watt
27.
Why do sharp knives cut better?
A
They have more mass
B
They reduce force
C
They increase pressure
D
They reduce friction
28.
Pressure at the bottom of a lake is:
A
Zero
B
Less than surface
C
More than surface
D
Equal to surface
29.
Which factor does not affect liquid pressure?
A
Depth
B
Density
C
Shape of container
D
Gravity
30.
Pressure increases when:
A
Force decreases
B
Area increases
C
Area decreases
D
Mass decreases
31.
Pascal’s Law states that pressure applied to a confined liquid:
A
Acts upward only
B
Acts downward only
C
Is transmitted equally
D
Is reduced
32.
Which liquid produces more pressure at same depth?
A
Water
B
Oil
C
Mercury
D
Alcohol
33.
Standard atmospheric pressure is equal to:
A
76 cm of mercury
B
10 cm of mercury
C
1 cm of mercury
D
760 cm of mercury
34.
Elasticity is the property of a material to:
A
Break easily
B
Change color
C
Regain original shape
D
Increase mass