EASY
9th CBSE
IMPORTANT
Earn 100

What is the SI unit of thrust?

Important Questions on Floatation

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 12

If the force is expressed in kgwt, what is the unit of pressure?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 1

When a piece of cork is held below the surface of water and then released, the cork immediately rises to the surface. What does this observation show?

MEDIUM
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 2

State and explain Archimedes' principle.

MEDIUM
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 3

Why does a balloon filled with hydrogen gas rise up in air, whereas a balloon filled with air does not?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 4

Why a truck or a bus has much wider tyres?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 5

Why is a bucket of water lighter when in water than when it is taken out of water?

EASY
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 6

Why is it easier to pierce a piece of cardboard with a sharp pin than with a blunt one?

MEDIUM
9th CBSE
IMPORTANT
Secondary Physics>Chapter 4 - Floatation>EXERCISES>Q 7

A piece of ice is floating in a water filled tumbler. After some time the ice melts. What will be the effect on the water level in the tumbler?