Principle of Archimedes NDA Questions

NDA Physics

Principle of Archimedes MCQ Questions


7.
Why does an object float in a fluid according to Archimedes' principle?
A.
The object has low density compared to the fluid
B.
The object has high density compared to the fluid
C.
The object has zero weight
D.
The object has negligible volume
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ANSWER :
A. The object has low density compared to the fluid
8.
Which property of an object is crucial in determining whether it will float or sink in a fluid according to Archimedes' principle?
A.
Mass
B.
Volume
C.
Density
D.
Weight
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ANSWER :
C. Density
9.
Why does a ship made of steel float on water according to Archimedes' principle?
A.
The ship's shape allows it to displace enough water to generate buoyant force greater than its weight
B.
The ship's steel material has low density compared to water
C.
The ship's engines provide enough upward force to keep it afloat
D.
The ship's weight is negligible compared to the weight of the water displaced
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ANSWER :
A. The ship's shape allows it to displace enough water to generate buoyant force greater than its weight
10.
What is the SI unit of buoyant force?
A.
Newton (N)
B.
Pascal (Pa)
C.
Joule (J)
D.
Watt (W)
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ANSWER :
A. Newton (N)
11.
What happens to the level of water in a container when an object is immersed in it according to Archimedes' principle?
A.
The water level rises
B.
The water level decreases
C.
The water level remains unchanged
D.
The water level fluctuates
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ANSWER :
A. The water level rises
12.
If the weight of an object is greater than the buoyant force acting on it, the object will
A.
Float
B.
Sink
C.
Remain at rest
D.
Oscillate
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ANSWER :
B. Sink