Which of the following is not an effect of force ?
A
Change in position of a stationary object
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B
Change in shape & size of an object
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C
Change in speed of an object
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D
Change in mass of an object
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Solution
The correct option is D
Change in mass of an object
According to definition, force is defined as the “ The push or pull acting on the on a body which tends to change its state of rest or motion or the direction of motion or change its shape & size ”.
Option-A (Incorrect):-
Because of external force stationary object comes into motion in the direction of the force. Ex:- stationary football comes in motion by applying force.
Option-B (Incorrect):-
Under the action of force, an object changes its shape & size. Ex:- Spring changes its shape & size by applying compressive force.
Option-C (Incorrect):-
Because of external force, an object changes its speed, speed increases when force is in the direction of force, and speed decreases when force is in the opposite direction of the force. Ex:- Boy pushing cycle the speed of cycle changes.
Option-D ( Correct) :-
Due to the force, the mass of an object does not change. Ex:- squeezing sponge changes shape but does not change mass.
