Physics MCQ 3: Basic Examination Quiz for NET Aspirants

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#1. . An empty bottle weighs 12.4 g. When filled completely with water, it weighs 62.4 g. When filled completely with acid, it weighs 72.4 g. The relative density of the acid is

1.2 g/cm³

1.2

60 g cm³

#2. . A person does not sink in the Dead sea because

the sea contains a large amount of other salts besides sodium chloride

The density of the person is less than the density of the Dead Sea water

of the surface tension due to salt water in the Dead sea

of none of the above reasons

#3. A ship sailing from a river to the sea

sinks leas

sinks more

does not sink at all

#4. The relative density of a solid according to the principle of Archimedes' is

weight of water / weight of solid

weight of solid in air / weight of solid in water

weight of solid in air / apparent loss of weight of solid in water

density of water at 4°C / density of the substance

#5. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

Pascal's law

Bernoulli's law

Archimedes' law

Boyle's law

#6. When a body freely floats in a liquid

the weight of the liquid displaced by the submerged portion will be equal to the weight of the floating body

the centre of gravity of the floating body and the center of gravity of the liquid displaced will be in the same vertical line

both (a) and (b)

the floating body to be in stable equilibrium the metacentre must be always below the centre of gravity of the body

#7. Two bodies, A of volume 20 cm³ and B of volume 30 cm³ are found to weigh the same when fully immersed in water. If weighed in air

A will weigh more than B

) A and B will weigh the same

#8. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or the bottom of the bucket. The reading of the spring balance - (a) B will weigh more than A; (b) The data is insufficient

will increase

will decrease

does not change

varies with the increase of depth of the immersion of the iron piece

#9. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

increase

decrease

remain the same

first decrease and then increase

#10. . A balloon filled with hydrogen will

continue going upwards uninterrupted

reach a particular height and remain floating

burst after reaching some height

start going downwards

#11. The weight of a piece of cork is 20 g. What volume of the cork is immersed when it floats in water?

40 cm³

20 cm³

80 cm³

4 cm³

#12. . A weightless rubber balloon has 100 g of water in it. Its weight in water will be

100 gm

20 cm³

80 cm³

4 cm³

#13. If the metacentric height of a ship increases, the stability of the shipped

decreases

remains unaffected

increases

first increases and then

#14. A boat gets most easily rocked if it is

broad and heavy

broad and light

narrow and light

narrow and heavy

#15. A piece of cork is embedded inside an ice block which floats in water. What happens to the level of water when all ice melts?

It will go down

It will come up

It will remain at the same level

The cork stops floating

#16. A wooden block weighs 100 g. It can be just immersed in water when a weight of 25 g is placed on it. What is the specific gravity of wood?

0.25

0.8

1.25

#17. When a body is immersed in a fluid the force of buoyancy of the fluid on the bo depends on

the immersed volume of the body

density of the liquid

acceleration due to the gravity at the place

all the above

#18. When the force of buoyancy on a fully immersed body is equal to the weight body, the body

sinks to the bottom of the liquid

remains in equilibrium anywhere in the liquid fully immersed

floats with a portion of its volume immersed

will float on the surface of the liquid

#19. A wide-mouthed glass tube is open at both ends. A thin almost weightless metal disc is held tight at the bottom by a string passing through the tube. The tu with the disc is now lowered vertically into a jar of water. Water is now pouring into the tube. The disc will fall down

when the levels of water inside and outside are the same

even though no water is poured

when the level of water inside just exceeds the level of water outside

when the level of water outside exceeds the level of water inside

#20. A ship, due to displacement of water, experiences an upthrust at the point known as the "metacenter." To make the ship stable the metacentre should

coincide with the centre of gravity of the ship

be above the centre of gravity

be below the centre of gravity

none of the above

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Physics MCQ 3: Basic Examination Quiz for NET Aspirants

< Results >

#1. . An empty bottle weighs 12.4 g. When filled completely with water, it weighs 62.4 g. When filled completely with acid, it weighs 72.4 g. The relative density of the acid is

#2. . A person does not sink in the Dead sea because

#3. A ship sailing from a river to the sea

#4. The relative density of a solid according to the principle of Archimedes' is

#5. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

#6. When a body freely floats in a liquid

#7. Two bodies, A of volume 20 cm³ and B of volume 30 cm³ are found to weigh the same when fully immersed in water. If weighed in air

#8. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or the bottom of the bucket. The reading of the spring balance - (a) B will weigh more than A; (b) The data is insufficient

#9. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

#10. . A balloon filled with hydrogen will

#11. The weight of a piece of cork is 20 g. What volume of the cork is immersed when it floats in water?

#12. . A weightless rubber balloon has 100 g of water in it. Its weight in water will be

#13. If the metacentric height of a ship increases, the stability of the shipped

#14. A boat gets most easily rocked if it is

#15. A piece of cork is embedded inside an ice block which floats in water. What happens to the level of water when all ice melts?

#16. A wooden block weighs 100 g. It can be just immersed in water when a weight of 25 g is placed on it. What is the specific gravity of wood?

#17. When a body is immersed in a fluid the force of buoyancy of the fluid on the bo depends on

#18. When the force of buoyancy on a fully immersed body is equal to the weight body, the body

#19. A wide-mouthed glass tube is open at both ends. A thin almost weightless metal disc is held tight at the bottom by a string passing through the tube. The tu with the disc is now lowered vertically into a jar of water. Water is now pouring into the tube. The disc will fall down

#20. A ship, due to displacement of water, experiences an upthrust at the point known as the "metacenter." To make the ship stable the metacentre should

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< Results >

#1. . An empty bottle weighs 12.4 g. When filled completely with water, it weighs 62.4 g. When filled completely with acid, it weighs 72.4 g. The relative density of the acid is

#2. . A person does not sink in the Dead sea because

#3. A ship sailing from a river to the sea

#4. The relative density of a solid according to the principle of Archimedes' is

#5. When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as

#6. When a body freely floats in a liquid

#7. Two bodies, A of volume 20 cm³ and B of volume 30 cm³ are found to weigh the same when fully immersed in water. If weighed in air

#8. A bucket of water is hung from a spring balance. A piece of iron is suspended in the water without touching the sides or the bottom of the bucket. The reading of the spring balance - (a) B will weigh more than A; (b) The data is insufficient

#9. A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

#10. . A balloon filled with hydrogen will

#11. The weight of a piece of cork is 20 g. What volume of the cork is immersed when it floats in water?

#12. . A weightless rubber balloon has 100 g of water in it. Its weight in water will be

#13. If the metacentric height of a ship increases, the stability of the shipped

#14. A boat gets most easily rocked if it is

#15. A piece of cork is embedded inside an ice block which floats in water. What happens to the level of water when all ice melts?

#16. A wooden block weighs 100 g. It can be just immersed in water when a weight of 25 g is placed on it. What is the specific gravity of wood?

#17. When a body is immersed in a fluid the force of buoyancy of the fluid on the bo depends on

#18. When the force of buoyancy on a fully immersed body is equal to the weight body, the body

#19. A wide-mouthed glass tube is open at both ends. A thin almost weightless metal disc is held tight at the bottom by a string passing through the tube. The tu with the disc is now lowered vertically into a jar of water. Water is now pouring into the tube. The disc will fall down

#20. A ship, due to displacement of water, experiences an upthrust at the point known as the "metacenter." To make the ship stable the metacentre should

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