MEDIUM
8th CBSE
IMPORTANT
Earn 100

Which of these is an example of a contact force?
(a)A guava falling from the tree.
(b)A magnet attracting a hanging iron nail.
(c)A plastic comb attracting small pieces of hair.
(d)A boat moving on water by the action of wind on its sail.

50% studentsanswered this correctly

Important Questions on Force and Pressure
MEDIUM
8th CBSE
IMPORTANT
Which of these is true for force?

MEDIUM
8th CBSE
IMPORTANT
P, Q, R and Sare four solid objects having the same mass. Which object is exerting the least pressure on the table?

EASY
8th CBSE
IMPORTANT
Figure shows a container filled with water. Which of the following statements is correct about pressure of water?


MEDIUM
8th CBSE
IMPORTANT
Look at the figure and say what the net force on P is


EASY
8th CBSE
IMPORTANT
A rectangular wooden block has length, breadth and height of respectively. This wooden block is kept on ground in three different ways, turn by turn. Which of the following is the correct statement about the pressure exerted by this block on the ground?

MEDIUM
8th CBSE
IMPORTANT
To increase the area of contact with the road and to reduce _____(Pressure / Force), heavy load-bearing vehicles have more number of tyres.

HARD
8th CBSE
IMPORTANT
It is difficult to cut cloth using a pair of scissors with blunt blades. Explain.

MEDIUM
8th CBSE
IMPORTANT
Two rods of the same weight and equal length have different thickness. They are held vertically on the surface of sand as shown in Figure. Which one of them will sink more? Why?
