EASY
8th CBSE
IMPORTANT
Earn 100
Which of the following is not an example of the force of gravity?
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Important Questions on Force and Pressure
EASY
8th CBSE
IMPORTANT
When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to
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?
EASY
8th CBSE
IMPORTANT
Which of the following are contact forces ?
A. Friction
B. Gravitational force
C. Magnetic force
D. Muscular force
EASY
8th CBSE
IMPORTANT
If we release a magnet held in our hand, it falls to the ground. The force responsible for this is:
EASY
8th CBSE
IMPORTANT
Which of the following force is utilised in reducing air pollution by removing dust, soot and fly-ash particles from the smoke coming out of chimneys of factories?
EASY
8th CBSE
IMPORTANT
The same force acts on four different objects having the areas given below, one by one. In which case the pressure exerted will be the maximum?
EASY
8th CBSE
IMPORTANT
Which of the following represents correct values for the normal atmospheric pressure?
A.
B. of mercury
C.
D. of mercury
EASY
8th CBSE
IMPORTANT
Which of following does not work on the existence of atmospheric pressure?
