(A) : When external force acting on a body moving on a rough horizontal surface is doubled, the acceleration of the body is doubled.(R ) : The acceleration of a body moving on a rough horizontal surface is proportional to the resultant force acting on it.

(A) : When external force acting on a body moving on a rough horizonta

1.	(A) : When external force acting on a body moving on a rough horizontal surface is doubled, the acceleration of the body is doubled.(R ) : The acceleration of a body moving on a rough horizontal surface is proportional to the resultant force acting on it.
Answer» Both (A) and (R ) are TRUE and (R ) is the correct explanation of (A) Both (A) and (R ) are true and (R ) is not the correct explanation of (A) (A) is true but (R ) is FALSE (A) is false but (R ) is true ANSWER :D