Principle of Archimedes NDA Questions

NDA Physics

Principle of Archimedes MCQ Questions


1.
What does Archimedes' principle state?
A.
Any object submerged in a fluid experiences a force opposite to gravity
B.
The volume of an irregular object can be determined by submerging it in water
C.
The buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object
D.
The density of a submerged object is directly proportional to its volume
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ANSWER :
C. The buoyant force on an object submerged in a fluid is equal to the weight of the fluid displaced by the object
2.
Which force is responsible for the apparent loss of weight of an object submerged in a fluid according to Archimedes' principle?
A.
Gravitational force
B.
Buoyant force
C.
Frictional force
D.
Electromagnetic force
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ANSWER :
B. Buoyant force
3.
If an object has a volume of 100 cm³ and displaces 50 cm³ of water when submerged, what is its buoyant force?
A.
50N
B.
100N
C.
1000N
D.
500N
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ANSWER :
A. 50N
4.

A solid weighs 20 N in air and 15 N when submerged in water What is the buoyant force acting on the solid?

A.

0.5N

B.

15N

C.

20N

D.

25N

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ANSWER :

A. 0.5N

5.
Which of the following objects will experience the greatest buoyant force when submerged in water?
A.
A 1 kg aluminum block
B.
A 1 kg iron block
C.
A 1 kg lead block
D.
A 1 kg wood block
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ANSWER :
B. A 1 kg iron block
6.
What is the relationship between the buoyant force and the weight of a fluid displaced according to Archimedes' principle?
A.
The buoyant force is less than the weight of the fluid displaced
B.
The buoyant force is equal to the weight of the fluid displaced
C.
The buoyant force is greater than the weight of the fluid displaced
D.
The buoyant force is unrelated to the weight of the fluid displaced
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ANSWER :
B. The buoyant force is equal to the weight of the fluid displaced