MEDIUM
8th ICSE
IMPORTANT
Earn 100

Describe a simple experiment to illustrate that air exerts pressure.

Important Questions on Force and Pressure

EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q B
Describe the crushing tin can experiment. What do you conclude from this experiment ?
MEDIUM
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q B
Give reason for the following :
A balloon collapses when air is removed from it.
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q B

Give reasons for the following : 

Water does not run out of a dropper unless its rubber bulb is pressed.

EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q B
Give reason for the following :
Two holes are made in a sealed oil tin to take out oil from it.
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q B
How does the atmospheric pressure change with altitude?
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q C
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q C
The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance of force from that point
EASY
8th ICSE
IMPORTANT
Concise Physics Middle School for Class 8>Chapter 3 - Force and Pressure>TEST YOURSELF>Q C
A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.