EASY
8th CBSE
IMPORTANT
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Assertion (A) : When a force is applied on a moving object in the direction of motion, its speed increases.

Reason (R) : When a force is applied on a soft object, it changes the size and shape of the object.

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Important Questions on Force and Pressure

EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 5

Assertion (A) : A force has both the magnitude and direction.

Reason (R) : Atmospheric pressure increases with altitude.

EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 1
What is the resultant force of the two forces F1 and F2 acting on a body in the opposite directions?
EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 2
Define atmospheric pressure.
EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 3
A force of 20 N acts normally on a body having area of cross-section 10 cm2. Calculate the pressure exerted by the body. 
EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 4
Define pressure. What is the SI unit of pressure?
EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 5
What are the unbalanced forces?
EASY
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 6
Why is a sharp knife more effective in cutting a fruit than a blunt knife?
MEDIUM
8th CBSE
IMPORTANT
Science 8>Chapter 8 - Force and Pressure>Exercises>Q 7
Why sledges are not provided with wheels?