Questions

Give the definition [1 M]

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19 questions · self-marked practice — reveal the answer and mark yourself.

Question 11 Mark
Pressure
Answer
The force acting on per unit area, applied to an object in the direction perpendicular to the surface is called pressure.
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Question 21 Mark
Non-Contact Forces
Answer
A force that can be applied without any contact between two objects is called non-contact force. For example, the magnet pulls the iron-pieces.
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Question 31 Mark
Muscular Force
Answer
The force resulting due to the action of muscles is known as muscular force. For example, writing, cutting vegetables.
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Question 41 Mark
Magnetic Force
Answer
The force exerted by a magnet to pull/push a metallic object is called magnetic force.
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Question 51 Mark
Gravity
Answer
Every object in the universe, whether small or large, exerts a force on every other object. This force is called the force of gravity or just gravity.
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Question 61 Mark
Gravitational Force
Answer
The force exerted by the earth to pull the objects towards itself is called the force of gravity.
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Question 71 Mark
Friction
Answer
The force of friction always acts on all the moving objects and its direction is always opposite to the direction of motion.
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Question 91 Mark
Electrostatic Force
Answer
When a charged body, either having a $(+)$ or $(-)$ charge, exerts force on another charged or uncharged body, that force is known as electrostatic force.
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Question 101 Mark
Contact Force
Answer
A force that can be applied only when it is in contact with an object is called a contact force. For example, hammering a nail.
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Question 111 Mark
Atmospheric Pressure
Answer
The pressure exerted by atmospheric air around us is known as atmospheric pressure.
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Question 121 Mark
Electrostatic force
Answer
A force exerted by a charged body on another charged or uncharged body is known as electrostatic force.
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Question 151 Mark
Atmospheric pressure :
Answer
The pressure exerted by the envelop of air all around us is called atmospheric pressure.
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Question 171 Mark
Electrostatic force:
Answer
The force exerted by a charged body on another charged of uncharged body is called electrostatic force.
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Question 181 Mark
Pressure:
Answer
The force acting on a unit area of a surface (perpendicular to surface) is called pressure.
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