Match the following
List – I List – II
a. Frictional force e. Zero
b. Gravitational force f. Electromagnetic force
c. When a body on rough inclined plane is just to move, then the net force acting on the body is g. $m g s i n$ $θ$
d. The force acting on a body placed on a smooth inclined plane is h. conservative force
The correct match is

a \to h; b \to f; c \to g; d \to e

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a \to f; b \to h; c \to e; d \to g

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a \to e; b \to g; c \to f; d \to h

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a \to g; b \to e; c \to h; d \to f

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Solution

The correct option is B $a \to f; b \to h; c \to e; d \to g$
(a) Friction is originated from exchange force between atoms or molecules at microscopic distance level. So it is electromagnetic force.
(b) Gravitational force is a conservative force and work done by the force of gravity is path independent.
(c) When a body is on inclined plane under gravitational force and frictional force and just starting to move , the acceleration will be zero because the net force is zero.
(d) When a body is placed on inclined plane at angle $θ$ on smooth surface, force acting on the body is equal to $m g sin θ$ along the inclined plane downward side.

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List – I	List – II
a. Frictional force	e. Zero
b. Gravitational force	f. Electromagnetic force
c. When a body on rough inclined plane is just to move, then the net force acting on the body is	g. $m g s i n$ $θ$
d. The force acting on a body placed on a smooth inclined plane is	h. conservative force