Question

1. Who was the first to state the principle of floatation?

Issac Newton

Archimedes

Aristotle

none of the above

2. What is the upward force experienced by a body, when it is immersed in a fluid, known as?

Buoyant force

Centrifugal force

Tangential force

none of the above

3. What happens to a body when its density is greater than the density of the fluid?

It floats

it sinks

It stay at rest

none of the above

4. Which of the following is an application of principle of floatation?

Ships

Balloons

Submarines

all of above

5. Which of the following is equal to the upthrust of the body?

mass of body

weight of liquid

weight of liquid displaced

none

6. SI unit of pressure is.

Newton

Pascal

Newton metre

none of the above

7. Newton is the unit of thrust

true

False

8. Lactometer works on the Archimedes principle

true

false

9. Relative density of water is 1

true

false

10.The density of iron is less than density of water

true

False
​

Answer 1

Answer:

(1)= Archimedes

(2)=Buoyant force

(3)=it sinks

(4)=all of above

(5)=mass of body

(6)=Pascal

(7)=True

(8)=True

(9)=True

(10)=False

Answer 2

Archimedes

Explanation:

Archimedes principal ,physical law of buoyancy discovered by the ancient Greek mathematician and inventor Archimedes