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Subjects
Science CBSE
Class 8 New
Exploring Forces
Pumpa Practice Questions
30.
Forces and its directions
Exercise condition:
3
m.
Select the best answer:
An empty bottle is floating in a tub of water.
.
1
.
Why does the bottle float?
Water exerts buoyant force
Magnetic attraction
Air pushes it downward
Friction force
2
.
What happens if water level rises?
Gravity becomes zero
Buoyant force acts downward
Buoyant force acts upward
Buoyant force disappears
3
.
If the bottle is filled with sand
Density of water changes
It sinks because weight increases
Gravity decreases
Buoyant force becomes zero
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