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1. Archimedes’ Principle is related to
A. Force and Motion
B. Pressure and Thrust
C. Buoyant Force
D. Energy Conservation
2. According to Archimedes’ Principle, a body immersed in a liquid experiences
A. Upward force equal to its weight
B. Upward force equal to the weight of the liquid displaced
C. Downward force equal to its mass
D. No force
3. The upward force acting on a body immersed in liquid is called
A. Friction
B. Gravity
C. Buoyant force
D. Centripetal force
4. When a body is completely immersed in water, it appears lighter because
A. Water supports it
B. Upthrust acts on it
C. Density decreases
D. Air pushes it up
5. Archimedes discovered his principle while studying
A. Pressure of air
B. Volume and density of a crown
C. Motion of planets
D. Reflection of light
6. Upthrust depends on
A. Weight of object
B. Volume of liquid displaced
C. Shape of container
D. Type of material of object
7. If a body floats on water, then the weight of the water displaced is
A. Equal to the weight of the body
B. Greater than the weight of the body
C. Less than the weight of the body
D. Zero
8. If a body sinks in water, then
A. Weight of liquid displaced < Weight of body
B. Weight of liquid displaced > Weight of body
C. Both are equal
D. None
9. The unit of upthrust is same as that of
A. Density
B. Pressure
C. Force
D. Energy
10. When a body is partially immersed, the upthrust depends on
A. Volume submerged
B. Total volume of body
C. Surface area of liquid
D. Temperature of liquid
11. Archimedes’ Principle helps to find
A. Weight of a body
B. Density of irregular solid
C. Volume of gas
D. Speed of liquid flow
12. If an iron nail sinks and a wooden block floats, it is because
A. Iron is heavier than water
B. Density of iron > water, density of wood < water
C. Iron exerts more pressure
D. Wood is lighter
13. When an object floats, the buoyant force is equal to
A. Weight of the object
B. Volume of the object
C. Density of the liquid
D. Pressure of the liquid
14. A stone appears lighter in water because
A. Density decreases
B. Upthrust acts upward
C. Friction increases
D. Stone absorbs water
15. Archimedes’ Principle can be used in designing
A. Electric circuits
B. Hydraulic brakes
C. Ships and submarines
D. Mirrors and lenses
16. If the weight of the fluid displaced is equal to the body’s weight, the body will
A. Sink
B. Float
C. Rise
D. Fall rapidly
17. The magnitude of buoyant force increases with
A. Decrease in fluid density
B. Increase in volume displaced
C. Decrease in submerged volume
D. Shape of container
18. Archimedes’ Principle is applicable to
A. Solids only
B. Liquids and gases
C. Gases only
D. None
19. In a denser liquid, the upthrust on the same object will be
A. Less
B. Equal
C. More
D. Zero
20. The apparent loss in weight of a body when immersed in water is equal to
A. Volume of water displaced
B. Upthrust
C. Actual weight of body
D. Density of body
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